Islamic militants used a TOW type anti-tank missile to strike an Egyptian Coast Guard Patrol boat today.
The Egyptian vessel struck appears to be a 26m (85ft long) Egyptian Coast Guard Patrol Boat built by Swiftsure. Such a vessel is a fast patrol craft and displaces 60-65 tons, and is lightly armed with maybe machine guns and perhaps a single 25mm cannon at best. Nothing really capable of intercepting such a missile.
We can see from the photos that this vessel's superstructure appeared to burn down to the main deck. But with 5 water tight compartments it is probably not in danger of sinking.
Pics of this attack on the small patrol boat:
Egyptian Coast Guard patrol boat is struck by small Islamic Terror missile:
Egyptian small craft come to assist their stricken sister:
Swiftsure 26m Patrol boat like that hit today: