by Max Barry

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by The Republic of Port Ember. . 19 reads.

Navy Vessels - Crusuo Class Corvette

Crusuo Class Corvette

Crusuo Class Corvette


Type: Multi Role Missile Corvette

Displacement: 1200 Tonnes

Length: 100 Meters

Beam: 14 Meters

Draught: 3.4 Meters (Normal Load)


CODAG-WARP System, consisting of:

- 2 x Merlin MD418/1 Diesel Engines

- 2 x Merlin MGT21 Gas Turbines

- 2 x Shafts

- 2 x five-bladed reversible controllable-pitch propellers

- Water Jet


2 x Merlin MS564G Diesel Engine Generator each producing 12000 HP (8800 kW)

Speed: 50 Knots (93 Km/ph)

Range: 7500 Kilometers at 20Km/ph

Endurance: 21 Days at sea

Complement: 100 (Includes Air Crew)


- Umberlee Command & Control Networ

- PE/DAESA Radar System

- SN/AE92-D - Hull Mounted Sonar

- SN/LFAS/T Towed Sonar

- V/UHF; VHF; HF; VlF Radios

- Satelite Communication System

- Legend System: Tactical Data Link

Electronic Warfare:

Thunder X21 EWS, consisting off:

- 4 x Chaff Launchers

- 4 x Flare Launchers

- Radar Warning Receiver

- Radar Jammer

- Signal Jammer

- Surface Ship Torpedo Defence System


- 100 x Tridento VLS Cells, utilising the Hircine Spear Missile Family

- 2 x ThunderStruck Dual Gun & Missile CiWS

- 76mm Quick Firing Cannon

- 4 x Torpedo Tubes

Additional Feautures:

- 1 x Helipad

- 1 x Aircaft Hanger (1 x Medium Helicopters)

- 1 x Hydra Blue Albatross Helicopter

- 2 x RHIB's

- 1 x Recon UAV

Country of Origin: Republic of Port Ember

Build By: Umberlee Shipyards

First Commisioned: 2019
Export Statistics

Export Price: $1 Billion NSD

Users of the Vessel (other than Port Ember):

- The United Socialist States of Crysuko x 10 Vesses


The Republic of Port Ember Security Forces Navy (PESFN) has since its Independence from Great Britian in 1950, relied solely on purchasing foreign naval vessels. This was easier, and more cost effective than designing and building its own vessels. However in recent times, Port Ember's international political focus has evolved into becoming more active and influential in their region. Port Ember became involved in three wars over a very short period of time, and it was realised that reliance on purchasing foreign vessels could no longer be the sole modus operandi of the navy.

Therefore the government started the process of starting its own domestic naval vessel production.

Even though Port Ember would start its domestic naval construction projects so late in the 21st Century, it had the following advantages to assist it with the startup:

- Port Ember has over 400 local shipyards in the private sector, which has been building all manners of civilian vessels for centuries.

- A few large international military purposed shipyards has been located within Port Ember for many years, leading to locals aquiring a wide set of skills and knowledge in the industry.

- The Port Ember Maritime University is a leading academic centre in all kinds of maritime studies and research, and has a enormous pool of intellectual knowledge and skills which could be tapped.

Thereafter a private company with its focus on designing and building military naval vessels for Port Ember was born - Umberlee Shipyards.

Since its inception, Umberlee Shipyards have exceeded all expectations and have become a major player on the international stage and have allready produced a massive range of naval warships, of which these ships have garnered international attention as being ultra modern and effective, and some classes allready undergoing real trails by fire, where they proved to be more worth than the money spend to purchase them.

Inspired by the recent massive successes and desire for a even better success at domestic production - the top structure of the PESFN, commisioned yet another project - Project Jack Russel.

This project was bourne from a intensive research study based on recent combat operations conducted by the PESFN, and concluded that a vessel was required to fill the capability gap between the Jolly Roger Missile Boat and the Orca Class Frigate. This study concluded that a new ultra modern Corvette class was required.

The Navy commisioned the new project, and the contract was awarded to their usual supplier - the joint venture of Umberlee Shipyards, Merlin Industries, Hydra Armaments and Port Ember Maritime University with the following specific requirements:

- Medium sized Corvette styled Warship.

- Fully Multi Roled warship, capable of handling a very wide range of duties and functions. These functions include, but is not limited to: minsweeping, anti surface warfare, anti air warfare, anti submarine warfare, offshore patrols, ship escort, general combat support and more.

- Vessel capable of operating independantly in the littoral zone.

- Vessel capable of operating as part of a fleet, in the role of outer perimiter defence and screening.

In summary, the navy needed a ultra modern warship capable of performing a wide range of duties and responsibilities, including those which is nornally left for larger warships. This vessel should be able to operate independanrltly in littoral zones and function effectively in an integrated fleet during blue water operations. Thus the Crusuo Class Corvette was born.

The Crusuo Class Corvette received its name from a national hero - Commander John Crusuo, who led a small naval battlegroup into the Battle of Port Arthur, where his naval group were ambushed and he led them to safety, whilst crippling an entire enemy regional fleet, which had far ranging benefits for The Republic of Port Ember. By the time this ship was named, Commamder Crusuo was still an active serving naval officer.

The Crusuo Class Corvette was build as a modern high-tech warship which fulfilled a wide range of literol duties, fill a critical multi role in a combined fleet and be able to operate effectively on its own.

The vessel waa build around the Trident Naval Combat System.

Construction of the Crusuo Class started in late 2018, with the knowledge and experience gained from the multitude of native build warships as an foundation, and passed its sea trials in mid 2019. The first vessel of the class was commissioned in late 2019.


Both the ship's hull and superstructure is manufactured from a high quality steel.

The vessel is of a single-hull design, ensuring hull strength and further increases seaworthiness.

The hull is long and narrow, with a V shaped bottom. This increases speed and stability during high speed.

The bow (front deck) of the ship contains the 76mm Quick Firing Cannon, Dual Gun & Missile CiWS and the VLS Cells.

The bow is 30 meters long (measured from the front end of the superstructure to the tip of the stern)

On the bow, starting from the middle, the vessel's HHC-04/N 75mm QFC turret is located. In front of the turret the chaff luanchers is located. There is a single steel door on the front of the superstructure giving access to the bow; as the superstructure ecompasses the entire width of the vessel. One therefore cannot walk "around" the ship while on the deck.

One of the revolutionary "ThunderStruck" CiWS is also located here.

The stern (rear) of the ship is 40 meters long (measured from the end of the superstructure to the tip of the stern).

The stern has three distinct features, namely the helicopter pad, the RHIB System and the UAV System.

The Helicopter Pad is 30m long and 14m wide. The aircraft hanger is adjacent to the pad, located within the superstructure.

Behind the Helicopter Pad, a Rigid Hull Inflatable Boat (RHIB) and its special crane is located portside on the stern. The crane is able to be folded down onto the deck and be securedly locked down when not in use.

Next to the RHIB crane to its right, on the starboards side of the vessel, is an pneumatic Unmanned Aerial Vehicle (UAV) launcher and a Recovery Wire for the drone.

The superstructure itself is 30 meters long and 10 meters wide. The door granting access to the superstructure is on the portside corner of the rear of the superstructure, and one door of the center of the superstructure on the front.

The superstructure is two stories tall. The deckfloor houses the crew cabin, ablution facilities (toilets and showers), galley with its attached galley stores (kitchen and mess hall) and a one room medical bay (doctors office). A door leading below decks are located in the galley.

The crewman cabins is luxurious when compared to other ships in its class. Each room is airconditioned, with four bunkbeds per room. Therefore each sailor has his own bed and does not need to share with anyone else. Each bunk is fitted with a curtain, to provide some manner of privacy. The 15 officers of the vessel has cabins on the second story.

The second story houses the two officers cabins, officer's lounge and the Bridge.

Seven officer cabins houses two bunks stacked in two's, fitted with a curtain each. The captain has his own cabin and does not share it with any of his crew. He has a single bunk and table in his cabin (serving as his personal office as well). His cabin is situated next to the bridge.

The officers lounge is a small room where the officers of the vessel eats and relaxes. It is equiped with a dining table, sofas, TV and a bookcase.

The Bridge is the most important room in the superstructure. Here the ship is steered and commanded from. All the equiped radar stations, comms stations, navigation stations and weapon control stations is located here.

Below deck (accessed via a hatch in the galley on the deckfloor) houses the engine room and ammunition storage room.

The engine room is located below deck, at the stern (rear) of the vessel and contains the vessels two diesel engines.

The rest of the below decks is the ammunition storage room. Here the on-deck weapon systems is fed from.

This class of warship has seven independent air-conditioning plants allowing the ship to operate at a preset temperature and moisture level in ocean water ranging between 4 C and 30 C, and the air temperature between −4 C and 32 C. This also keeps the air pressure in the citadel five millibars higher than on the outside to prevent the drawing in of RBC (radioactive, biological, or chemical) contamination. These ships are also fitted with seawater fire-fighting pumps and sprinkler systems. These are also ready to wet down the warship's ammunition magazines. In addition, a CO2 fire-extinguishing system protects the gas turbine and diesel engineering areas. The galleys are fitted with an ANSUL system and the flight deck and hangar with a foam fire extinguishing system. Two reverse-osmosis plants generate 15 cubic metres of fresh water each every 24 hours. This water is provided to the galleys, messes, and drinking water supplies, and it is also used for cooling the guns, the air-conditioners, and the engine room, in addition for washing the helicopters. Water pumped to the guns, sensors, and air-conditioners is chilled by two refrigerators. An oil-fired hot-water boiler, made by the same company, provides the ship's heating, whereas the hot water for the galley and messes comes from a 600-litre, 45 kilowatt electric geyser.


The Crusuo Class Corvette is propelled by a Combined Diesel and Gas Turbine - Water Jet and Refined Propellers (CODAG-WARP) with steerable propeller and a water jet Propulsion system.

This Propulsion System utilises 2 x Merlin MD418/1 Diesel Engines - the same engines which is used in all of the Umberlee Shipyards produced warships. Individually they produce 15 000HP. It also consists out of 2 x Merlin MGT21 Gas Turbines. Individually they produce 40 000hp. This gives a total combined output of 110 000HP.

The CODAG-WARP Propulsion System is coupled to two shafts, each driving a five-bladed reversible controllable-pitch propeller.

Merlin MD418 Diesel Engines

These reciprocating Marlin Diesel Engines is well known for their operating simplicity, robustness and fuel economy.

It is a 4 stroke, 18 cylinder twin turbo diesel engines which produces 15 000HP each (total of 30 000 HP).

Each of the Medium Speed engines runs at approximately 800 Revolutions Per Minute (RPM).

The engines are manufactured in a trunk layout engine, enabling a short engine to fit under deck - while retaining a long stroke, to reduce strain on the engine, requiring less maintenance.

The connecting rod is located within a large-diameter hollow piston rod. This "trunk" carries almost no load. The interior of the trunk is open to outside air, and is wide enough to accommodate the side-to-side motion of the connecting rod, which links a gudgeon pin at the piston head to an outside crankshaft.

The walls of the trunk is bolted to the piston. The working portion of the cylinder is ring-shaped, with the trunk passing through the centre of the cylinder itself.

The horizontal cylinders is what ensures the low profile of the engine, allowing the engine to fit under deck - and beneath the vessels waterline to protect the engines against possible enemy fire.

The two engines is connected to two shafts, turning two five-bladed reversible controllable-pitch propellers. The rotation of the crankshaft is connected to the camshaft on the motors. The engines each runs at approximately 800 RPM

Each engine is connected to a reduction gearbox, which has a clutch, allowing one engine to be removed from the shaftline, and forcing the remaining engine to power both shafts. This allows for maintenance and repairs on a engine, even while the ship is in motion. One engine can easily propell the vessel without causing harm to it, however the vessel will lose its high speed capability for this duration.

These engines have a good proven track record of operating simplicity, robustness, fuel economy and manufacturing simplicity.

Merlin MGT21 Gas Turbine

The Merlin MGT21 Gas Turbine delivers 40 000HP - with a combined total of 80 000HP. It has a thermal efficiency of 39 percent at ISO conditions.

The Merlin MGT21 Gas Turbine is a continuous combustion, internal combustion engine. There are three main components:

An upstream rotating gas compressor;

A downstream turbine on the same shaft;

A combustion chamber or area, called a combustor.

The basic operation of the gas turbine is a Brayton cycle with air as the working fluid. Fresh atmospheric air flows through the compressor that brings it to higher pressure. Energy is then added by spraying fuel into the air and igniting it so the combustion generates a high-temperature flow. This high-temperature high-pressure gas enters the turbine, where it expands down to the exhaust pressure, producing a shaft work output in the process. The turbine shaft work is used to drive the compressor; the energy that is not used for compressing the working fluid comes out in the exhaust gases.


The Diesel engines is used while the vessel is cruising, as it is more efficient and economic to utilise than the gas turbines for this purpose. One or both diesel engines can be used for this purpose. The vessel is faster and more fuel economic when both engines are used similtaniously, but one may be switched off without stopping the vessel, in order to conduct maintenance and/or repairs.

The Gas Turbines are used when top speed is needed, as the power ouput is immediate and highly effective when used at full power.

In addition to these features, the propulsion system which is composed of a water-jet drive, in addition to two propellers. Its CODAG-WARP system (COmbined Diesel And Gas turbine-WAter jet and Refined Propellers) consist of a steerable propeller and a water jet.

As mentioned, the propulsion power is provided by a combination of diesel engines and gas turbines. The propulsion plant can be operated in four modes:

I Economical mode: One diesel engine driving both shafts.

II Maneuvering mode: Both diesel enginess driving both shafts.

III - CODAG-WARP: Both diesel engines and the gas turbines turned on.

IV Gas turbine only: Gas turbines powering water jet only.

Additional Features

The four engines are placed on vibration emmiting rubber blocks inside a seperate metal container sound capsule, lined with acoustic tiles. This makes the vessel silent to avoid detection by a submarine's acoustic sonar.


Please note that the Power Section describes the energy production of the vessel and not the propulsion devices.

The Generator

The Crusuo Class generates its electricty by means of two installed Merlin MS564G Engines of which individually is a 5675 cm3 (5.7 litres, 345-cubic-inch) displacement inline 6-cylinder 4-stroke Diesel engine, each producing 12000 HP (8800 kW)

The engine is water-cooled, and is produced using cast-iron cylinder block, with cast-in cylinders. The engine utilizes diesel fuel delivered in a direct injection method from a PES style inline injection pump. The cylinder head is a single unit for all cylinders, and the cylinder head cover and air intake are shared by a single cast aluminum alloy. Exhaust ports 2&3 and 4&5 are siamesed together, presenting an exhaust manifold with only four outlets.

The crankshaft is a precision forged unit running in seven three-layer bearings, with counterweights bolted onto the crank webs. The middle bearing is also the thrust bearing. The connecting rods are of a split design, with bronze bushings for the piston pin.

The two onboard generators never runs at the same time. Only one generator is used at a time to generate the power to the vessel, and the generators runs on a relay system - working only 4 hours before shutting down for 4 hours while the other generator takes over the power generation duties. This allows the generators not to overwork and reduces wear and tear - and eases constant maintenance. The relay system works automatically and does not need the input of a human operator. The relay system also makes sure the switch is completed smoothly - without shutting down power to the vessel, even for a second.

Distribution System

The power which is generated by the on board generators is then distributed efficiently throughout the ship via the power distribution system.

The distribution system consists of different component for distribution and safe operation of the system, including: the Main Switch Board; Bus Bars; Circuit Breakers and transformers.

Emergency power

For the rare possibility of both generators failing, backup power is stored in a Lithium Battery Stack, which is recharged by the generators itself.


The Crusuo Class was designed to encompass many stealth feautures. The experience gained with the previous ships build assisted immensely.

Radar Cross Section Reduction:

Where possible the shape of the ship avoided vertical surfaces, which would perfectly reflect any such beams directly back to the enemy's emitter. Retro-reflective right angles were eliminated where possible.

Furthermore, round shapes on the vessel were eliminated or covered up, especially on the gun turrets. Cavities that present a horizontal face were actively avoided during the design since they act like a trap and are very visible to radar. To achieve this, reflective surfaces were covered with panels.

Noise Emmisions Reduction:

In an attempt to reduce the vessels noice signature, the Crusuo Class uses a muffled exhaust system on its two diesel engines and its two propellers have been shaped to reduce its noice emmision. Lastly, in the engine room - the four engines are placed on vibration emmiting rubber blocks inside a seperate metal container sound capsule, lined with acoustic tiles. This makes the vessel silent to avoid detection by a submarine's acoustic sonar.

Signal Emission Reduction:

The Crusuo Class emits lots of electromagnetic radiation in the form of radar, radio, and even bleed-off from the ship's electrical systems. The vessel has a mode available that switches as much of the electronic emissions off temporarily, the downside of course is that the ship then has to rely on passive sensors and can't easily send messages further than line of sight.

The high tensile steel of which the ship is constructed is more effective at blocking radio waves than normal steel. This protects the ship's electronics against an electromagnetic pulse. In addition, it stops any radio frequency signals generated by the ships electronic devices escaping outside. Except for the bridge, the vessel has no windows that would allow the signals to escape. However these windows have been shaped to absorb radiation as well.

Thermal Emissions Reduction:

To add to their stealth characteristics, the exhaust fumes from the gas turbines and diesel engines are cooled by spraying water into the exhaust duct and then expelled just above the ship's waterline, making the destroyer almost invisible to most infrared detectors.

Furthermore the vessel's plumbing consists out of pipes mounted against the hull walls, which can pump cold water through it in an attempt to cool down the hull as a whole.


The vessel is fitted with a wide variety of sensors, of which most components is fitted on the mast of the vessel. The mast is a tower mounted on the deck directly behind the superstructure. The various radio's and radars uses a combined (single) antenna, located here. The following sensor components are installed on the vessel:

Umberlee Command & Control Network:

The Umberlee Command & Control Network (UCCN) is an integrated and automated software system which acts as the 'Brains of the Trident Naval Combat System'.

The UCCN links the vessel's detection and countermeasure systems to each other. This allows the vessel to discover, track and engage incoming threats with the appropriate counter measure, ranging between the massive variety of Electronic Warfare components, countermeasures and decoys and the onboard Close-In Weapon Systems (CIWS).

The system has the ability to detect and track up to 1000 incoming simultanious targets, and then automatically prioritise them according to its perceived order of danger posed, focussing first on the most dangerous target. This has the added advantage of assigning different and appropriate counter measures to numurous targets at once.

This system can opperate automatically, without the input of a human operator, but can be overiden. The connection with the weapon systems and counter measures allows the UCCN to neutralise threats with high accuracy and rapidly fast speeds - faster than which a human operator is capable of.

This system is designed to counter threats coming from the sub surface, surface and air.

The PE/DAESA Radar System:

This radar system consists out of two radars and a Radar Suite Controller (RSC) to coordinate the sensors.

The radars are of the Active Electronically Scanned Array, 3D type, one operating on the S-Band frequency whilst the other operates on the X-Band frequency.

The S-Band radar provides volume search, tracking, ballistic missile defense discrimination and missile communications capabilities.

The X-Band radar provides horizon search, precision tracking, missile communication and terminal illumination of targets capabilities.

The two radars also shares functionality including radar navigation, periscope detection, as well as missile guidance and communication.

The radar was developed by the Port Emberian Maritime University and is now manufactured by Hydra Industries.

Technical Details:

Conventional radars, consisting of a rotating transmitter and sensor, have limited power, are vulnerable to enemy jamming and perform only one function - with separate units therefore required for surveillance, tracking and targeting.

As an active array, PE/DAESA uses software to shape and direct its beam allowing several functions to be carried out at once and, through adaptive waveform control, is virtually immune to enemy jamming. Active arrays have both longer range and higher accuracy than conventional radars. The beam-directing software uses sophisticated algorithms to schedule looks so that the potentially hundreds of active tracks are maintained with maximum accuracy.

The PE/DAESA uses two planar arrays to provide coverage over only part of the sky; complete coverage is provided by rotating the arrays, essentially similar to the way conventional radar systems operate. This is in contrast to the US AN/SPY-1 system (as used on the Ticonderoga class cruiser and Arleigh Burke class destroyer) or the Dutch APAR system (as used on the Royal Dutch Navy's De Zeven Provincin class frigates, the German Navy's Sachsen class frigates, and the Royal Danish Navy's Ivar Huitfeldt class frigates), which use multiple arrays fixed in place to provide continuous coverage of the entire sky.

Whilst this may seem to be a disadvantage, the PE/DAESA radar rotates at 30 revolutions per minute, with two back-to-back arrays, meaning no part of the sky lacks coverage for more than one half second on average - the precise time varies as the beams can also be swept back and forth electronically. In addition, the use of a smaller number of arrays allows the system to be much lighter, allowing placement of the arrays at the top of a prominent mast rather than on the side of the superstructure as in the Dutch or US ships. Placing any radar emitter at higher altitude extends the horizon distance, improving performance against low level targets (see Sea skimming); PE/DAESA is at approximately double the height above the waterline than the arrays of its Dutch or US equivalents. Although precise details of the PE/DAESA performance in this regard are unlikely to enter the public domain, such factors may mitigate the disadvantages of fewer arrays.

Some tasks are difficult to combine, for example (long range) volume search takes a lot of radar resources, leaving little room for other tasks such as targeting. Combining volume search with other tasks also results either in slow search rates or in low overall quality per task. Driving parameters in radar performance is time-on-target or observation time per beam. This is why the PE/DAESA is a dual radar, having two 'heads' working together, but seperate. This gives the added advantage that the two systems can use two different radar frequencies; one being a good choice for long range search, the other a good choice for an MFR (as physics makes both tasks difficult to combine).

The S-Band Radar's main function is that of wide area search. It is capable of fully automatic detection, track initiation and tracking of up to 1,000 targets at a range of 480 kilometres, and can track ballistic missiles at a range of 2000km It is also claimed to be highly capable of detecting stealth targets, and is able to detect and track outer atmosphere objects at short range, making it capable of forming part of a Theatre Ballistic Missile Defence system.

Modes of work

Long and medium-range search

Surface picture search

High-speed horizon search

High-angle search and track

Multiple target tracking and multiple channel fire control, 1000 targets can be tracked.

SN/AE92-D - Hull Mounted Sonar:

This is a hull-mounted, multi function sonar system, which is an active/passive sonar and echo sounder and is used to determine water depth, bottom contour, bottom composition and also to detect and track sources of underwater noise, for example submarines, torpedos or even certain underwater mines. The sonar is mounted on the bow of the vessel, beneath the water line.

This is an upgraded version of the previously used SN/AE92-C Hull Sonar.

SN/LFAS/T Towed Sonar:

This Towed Sonar is a Low Frequency Active Sonar (LFAS) and consists of both active and passive sonar arrays. It is a cable towed-array that enables ships to hunt the latest submarines at considerable distances and locate them beyond the range at which they submarines can launch an attack.

This array is towed a large distance behind its mother vessel, keeping it far away from the vessel's own created noise, improving the sonars signal to noise ratio, further increasing its effectiveness in detecting and tracking underwater targets. This towed sonar increases, and builds upon the effevtiveness of the hull mounted sonar.

Legend System:

The Legend System is considered a world bechmark system. It is a system which is an integrated network which identifies the position of all friendly vessels in the area and distinguishes between friendly/unknown vessels. This system can share tactical data and maps with friendly vessels.

The Legend System combines both interrogator and transponder functions. It is a dual transponder - both a military transponder, and a civilian transponder. Any of the two transponders can be switched off at any time.

Its secondary and most critical application is that of a Tactical Data Link - exchanging digital information among airborne, land-based, and ship-board tactical data systems. It is the primary means to exchange data such as radar tracking information beyond line of sight. The Legend System uses Cloud computing to share data between friendly vessels when, allowing multiple vessels to operate as a single entity in the identification and destruction of inbound enemy threats and identified targets. This improves the total defence of the entire fleet and increases its total offencive capabilities.

External Communication:

The vessel is fitted with a variety of external communication systems, such as:

● V/UHF; VHF; HF; VlF Radios

● Satelite Communication System


The Trident Naval Combat System forms a central role as part of the integral, integrated and all encompassing defence network of the vessel - coordinating all the ships radars and sensors into defencive actions.

The ship is fitted with a modern and sophisticated Electronic Warfare System, named the Thunder X21-A EW System. This package was created specifically for the Jolly Roger Class, which was designed by a Port Ember Maritime University Think Tank and sold to Hydra Industries for production. This is the upgraded version of the battle tested system, now forming part of the Trident Naval Combat System package. This system is considered a word class benchmarking system, as it has proven itself to be highly effevtive and it is a integrated system - performing various tasks at once.

The system operates as a Electronic Support Measures (ESM) device, which produce signals intelligence (SIGINT), communications intelligence (COMINT) and electronics intelligence (ELINT).

Furthermore, it is an integrated electronic network which aims to defend the vessel against missile attacks. It contains the following:

- Radar Warning Receiver.

The vessel is fitted with a Radar Warning Receiver which detects and issues a warning when a radar signal that might be a threat is detected. This system then automatically activates the appropriate defence system (chaff/flare/CiWS) in order to defend itself.

- Radar Jammer.

This system attempts to jamm incoming missiles which is radar guided. The combined antenna is placed on the mast.

- Signal Jammer.

This system attempts to jamm incoming missiles which is radio signal guided. The combined antenna is placed on the mast.

- 8 x Chaff Launchers.

The installed Chaff Launchers is a lightweight, quick reaction system for the self-defence of the vessel against surface-to-surface and air-to-surface missiles. Chaff dispensing rockets are fired to form a radar decoy screen around the vessel. There is 16 x small Launchtubes mounted right in front of the superstructure, with 8 x Starboard and 8 x Portside, of which side is loaded with 4 x chaff and 4 x countermeasure flares.

- 8 x Flare Launchers.

The installed Counter measure flare Launchers is a lightweight, quick reaction system for the self-defence of the vessel against heat seaking missiles. The countermeasure flares are fired off to attempt to deceive infrared missiles. These flares burn at temperatures of thousands of degrees. There is 8 x small Launchtubes mounted right in front of the superstructure, with 8 x Starboard and 8 x Portside, of which side is loaded with 4 x chaff and 4 x countermeasure flares.

- Surface Ship Torpedo Defence System.

The system consists of:

- an acoustic passive towed array

- a towed acoustic countermeasure (flexible)

- a single-drum winch

- a processing cabinet

- 2 display consoles

- 2 expendable acoustic device launchers (1 port, 1 starboard)

- 16 expendable acoustic devices (8 in each launcher)

The passive acoustic towed array is specifically designed to detect torpedoes (unlike traditional ASW sonars) and has additional in-built non-acoustic as well as acoustic intercept sensors. Through advanced AI processing it is able to generically identify torpedoes as well as classify specific weapon types and modes and undertake threat evaluation and posturing analysis. The system provides tactical advice dependent upon the specific threat weapon, mode and posture to maximise vessel survivability, which typically involves vessel manoeuvres and also includes the deployment of countermeasures. The countermeasures - both towed and expendable variants - lure the threat away from the vessel in a soft-kill manner.


Tridento Vertical Launch System (VLS)

The Tridento VLS is a Port Emberian Vertical Launch System designed and manufactured by Hydra Industries Ltd, with the intent to be utilised as part of the Trident Naval Combat System, installed on Port Emberian warships.

This system is an upgraded variant of the previously used Mk VI VLS, and was designed specifically to be used with the Trident Naval Combat System, and to fit the new generation Hircine Spear missile family.

The Tridento system is highly modular. Similar VLS's is manufactured in rigid forms, of mostly 4 horizontal cells and two rows, making one system 8 cells total. This has the drawback of only being able to install a small specific amount of cells on a vessel and effectively wasting space available. Thus the Tridento VLS is manufactured as individual 'shafts'. This allows the vessel to be installed with more total cells than normally possible.

Each shaft is closed with one automatic hatch door, its cell when opened. Each shaft is one meter wide and one meter long and 8 meters deep.

Each cell utilises a 'hot launch' and each cell has its own exhaust vent to make this possible and safe.

Altough the Tridento was designed and manufactured specifically for the Hircine Spear missile family, it can accomodate other missiles of similar sizes.

There is 100 x Vertical Launch System chutes installed on the vessel - Rows of 10 Cells placed horizontally and 10 Cells vertically placed. The standard configuration of the Lilly Black Class is as follows:

- x 30 Hircine Spear Surface to Air Missiles

- x 30 Hircine Spear Anti Ship Missiles

- x 30 Hircine Spear Land Attack Missiles

- x 10 Hircine Spear Anti Ballistic Missiles

HHC1-04/N 76mm "K.O" Quick Firing Cannon

HHC1-04/N 76mm "K.O" Quick Firing Cannon is a Port Emberian large calibre Quick Firing Cannon manufactured by Hydra Industries which forms part of the Trident Naval Combat System.

Although it is designated as a Close in Weapon System, this is only a secondary role whilst it assists the more effective "ThunderStruck" CIWS as a last resort. Its main role is to engage targets on land and sea which does not require a missile strike. It has been combat tested recently, where this weapon was used to sink modern cutter warships with a fierce effeciency.

The weapon is a single barrelled, unmanned and remote controlled weapon. The weapon is housed in an unmanned capula located on the deck of the vessel, at the start of the stern. As part of the CiWS, it engages incoming air targets automatically. The operator can control the weapon from inside the Operations Room (Bridge) via remote control to engage targets manually. The weapon turret can traverse 360 and has a elevation between -15/85. It has an effective firing range of 16 kilometers and can fire up to 120 rounds per minute.

The weapon is fed through a autoloader, placed directly below the capula, from under the deck in the ammunition room.

See this page for more details regarding this weapon system

2 x H-PDM-GC-21A "ThunderStruck" - CIWS

The H-PDM-GC-21A, nicknamed the "ThunderStruck" - is a Port Emberian naval Close In Weapon System designed and manufactured by Hydra Industries which forms part of the Trident Naval Combat System.

It is a unique weapon, which combines two 6 barrelled 35mm Gatling Cannons and a battery of Hircine Spear-Class A Point Defence missiles. It is seen as a very effective last line of defence against air and missile threats.

The H-PDM-GC-21A is a jamming resistant Port Emberian Dual Missile Launcher; dual 35mm automatic Rotary Cannon (Gattling Guns) Close in Weapon System. Military Today has rated it as "The most modern and effective CiWS in service today".

It is deployed as a combined gun and missile system, providing defence against anti-ship missiles, anti-radar missiles, guided bombs and even sea skimming missiles flying low as 2 meters. The system can also be employed against fixed- or rotary-wing aircraft or even surface vessels such as fast attack boats or targets on shore.

See this page for more details regarding this weapon system

Torpedo Tubes

The vessel is fitted with 4 x Torpedo Tubes, located on the vessels bow. The vessel utilises the Needle Torpedo, a 324mm Lightweight acoustic homing torpedo, used to engage sub surface targets.


The vessel is equiped with sufficient aviation facilities to handle a Anti Submarine Warfare Helicopter. These facilities include:

- Helipad.

The helipad is large enough to land one medium sized helicopter at a time. The pad itself is equiped with all required landing and safety markings; Corrosion Resistant Steel (CRES) nets; Visual Landing Aids (VLA) - Lights and Fire Fighting Equipment.

- Umberlee HCCS - Helicopter Claw Capture System.

The U-HCCS system provides full security after landing and through all on-deck operations, up to and including Sea State 6 conditions. The pilot, assisted by visual cues, flies the aircraft to a position over the designated landing area on the flight deck. The Indal Rapid Securing Device (RSD), fitted with a pair of claw arms designed to capture and secure the wheel spurs of the aircraft, tracks the helicopter position with the capture arms at a ready position at either end of the RSD. The claw arms are spring loaded and held in the down position until tire sensors contact each tire as the arms are brought in. Upon contact, spring force rotates the claw arm upwards until it contacts the wheel spur. Each claw arm acts independently, but they are mechanically interlocked to ensure simultaneous operation.

Once the aircraft is secured, it is ready to be aligned/straightened for traversing from the designated landing area to the hangar or any intermediate location. All deck handling operations can be accomplished without the need for personnel on the flight deck.

Hangar. The Helicopter Hangar is situated next to the Helipad and is large enough to house and secure one Medium sized helicopter and a Aviation Workshop and Aviation Storeroom.


- The vessel also carries 2 x Rigid Hull Inflatable Boat (RHIB). These RHIB's are lowered into and recovered from sea via a crane, located at the vessel's stern. This is to include versatility to the vessel for boarding and inspecting suspicious vessels during its patrol role.

- Opposite the RHIB crane, on the starboard side of the vessel, is an pneumatic Unmanned Aerial Vehicle (UAV) launcher and a Recovery Wire for the drone. The vessel is equiped with a LinkScanEagle Drone


- Very fast and agile

- Stealth Ship

- Modern and effective surveilance systems

- Modern and effective defensive measures

- Very high level of firepower

- World leading Anti Surface Capability

- Effective at self defence against submarines and aircraft.

- Very high level of flexability. Works well alone and extremely effective in a combined fleet.

In summary, the Crusuo Class Corvette is a modern latest generation warship. It is highly effective in anti surface, anti air and anti sub surface warfare roles. Therefore the Crusuo Class is effective to execute a large variety of missions, whether solo, escorting another vessel or as part of a combined fleet. I


The Crusuo Class was designed and is being manufactured in a Joint Venture:

- Umberlee Shipyard manufactures the hull and superstructure.

- Hydra Industries manufactures the weapon and electronic systems.

- Merlin Industries manufactures the vessels engines.

- Port Ember Maritime University conducted most of the advanced Research and Development of the ship and weapon systems for the vessel.


The current Port Ember Navy Doctrine for the Crusuo Class dictates its use:

- Escort other vessels when an escort is needed.

- Execute any solo tasks given anywhere in the world. Capable to survive on its own no matter the threat.

- This vessel is seen as a master of literol zone patrols during wartime.

- Form part of the nucleas of a Aircraft Carrier Strike Force - executing the functions of peremiter defence.


- I went to great length to ensure the Crusuo Class is both badass and actually realistic. I am however no expert and if you spot a technical glitch, please drop me a TG.

- The pic displayed here is obviously not realy the Crusuo. Reason being - i have zero experience/skill in drawing and do not have access to a PC atm. Me and my android phone can not get a pic drawn for the ship.. and this pic provides a very rough (almost kinda) idea of what she looks like.

The Republic of Port Ember