The Type 5 VLS system was designed in 1981 to launch Javelin Missiles from naval vessels. Multiple variations were tested, with the Type 5 beating out its previous versions.
While the tube system and material was up to standard, there were debates on how the system should be implemented. Early designs were built on a revolver design. One lid with a circular track holding 8 missiles that rotated with a new tube to reload. Soon after, the 2x4 grid system was adopted and became the preferred layout for vessels.
Type 5A: 1981- The original revolving design. This used a cold launch system.
Type 5B: 1981- The grid design with 2 rows of 4. Utilizes a hot launch system.
Type 5C: 1996- A carousel improvement. The system was expanded to hold newer and larger missiles such as the Spirit Cruise Missile.
Type 5D: 1997- A grid improvement to follow the Type 5C, allowing the grid to also fired larger missiles.
Type 5E: 2010- Improved canister storage for the grid design. Allows the storing of smaller missiles, such as the CISD SAM, in groups of four in a single cell.
Type 5F: 2011- Improved Canister design for the revolver style.
Type 5G: 2012- Updated venting system for hot launches on the grid design. Replaced water deluge system with a U shaped gas management system similar to the MK57.