There's rumors of terrorists trying to cross over, and we're to look for suspicious vessels.

They were on patrol, looking for suspicious vessel approaching the coast; suddenly the engine shut down.

The guns of the castle commanded the whole bay, so that any suspicious vessel attempting to dock could be attacked.

While she was escorting a convoy on 11 January 1800 Apollo saw a suspicious vessel some distance away.

"The Coast Guard cutter that patrols our search area has yet to report an encounter with a suspicious vessel."

Alternatively, a suspicious vessel may need to carry an independent observer on future voyages.

The suspicious vessel was closed on and illuminated, and revealed nine armed men in uniform who surrendered immediately upon challenge.

"Page 437, Paragraph 4: Report before boarding any suspicious or unauthorized vessel in a proscribed zone."

On 15 May 1806, while she was escorting one such convoy, dawn revealed a suspicious vessel hovering near the fleet.

To combat this trend, the Coast Guard in the past year has boarded 2,056 suspicious vessels and seized 30 of them for carrying drugs.