Tamil sea tigers are known to use suicide boats note warhead and detonators on bow of boat in photo 2
The Tamil sea Tigers build most of their own combatant craft. Weapons a re mostly Russian design.
Sri Lanka' Navy operates a varity of boats but its main Combatant Craft is the Isreali Super Divora operated by Fast Attack Floatillia 4
The Divora seen last photo.
Sri Lanaka Navy has lost Divoras and other craft in combat.