The Royal Thai Navy (RTN) has received four new M21-class patrol boats from local shipyard Marsun Company Limited. Handover ceremony was held at the Sattahip Naval Base in Thailand’s Chonburi province.
The primary missions of M21 boats are maritime patrol and law enforcement, coastal security, prevention of infiltration in sea and coastal zones, as well as protection of commercial shipping, fishing boats, marine resources and coastal areas in gulfs and open sea.
The vessels bear pennant numbers 261, 262, 263, and 264 respectively, and will join three other M21 boats in the same class, which were delivered by the same shipbuilder in May 2013.
According to specifications provided by Marsun, the M21 class features an overall length of 21.4 m, an overall beam of 5.56 m, and a hull draught of 1.05 m. The platform is powered by two MAN diesel engines driving two fixed pitch propellers, and can attain top speeds in excess of 30 kt.
The aluminium-hulled platform can accommodate a crew of nine, and has a mission endurance of 24 hours. It can also carry 4,000 litres of fuel and 1,200 litres of water.
The M21 class features one bow-mounted Denel GI-2 20 mm gun in the foredeck, and one 12.7 mm machine gun with a co-axial 81 mm grenade launcher in the aft section. The patrol vessel can embark one rigid hull inflatable boat at stern.
The patrol boats are intended for deployment in the exclusive economic zone (EEZ) of Thailand.