HTMS "Similan" is very similar to its sister ship in Chinese service, except it uses a Chinese hull. The most important difference, however, is in upgrading its replenishment capability. Despite being able to replenish solid supplies, the capability to resupply ammo is still rather limited for the Chinese ship. The Thai ship has further overcome this problem by increasing the ammunition resupply capability. Despite the difference between two ships, most of the technologies and components, especially those core technologies for both ships remain the same, and for this reason, China has placed HTMS "Similan" and the Chinese ship "Qinghaihu" (青海湖) in the same class. This class would eventually evolve into Type 903 replenishment ship ("Fuchi" class).