This new secret superboat is the latest British weapon to help fight the war on terror.
Sea - Military - Experimental
The stealth boat, to be used by the Royal Marines, is thought to be capable of reaching speeds of about 70mph.
The vessel will be used in various roles including the insertion of troops in enemy territory and the hunting of drugs smugglers.
It is believed to have been designed and built by VT Halmatic, based in Portsmouth, Hants, as a replacement for two boats currently used by the elite SBS.
Experts believe the dull-grey boat will have been designed using stealth technology to help it avoid radar detection.