TheNornenclass patrol vesselis a Norwegian inshore patrol vessel designed for coast guard duties such as search and rescue, fire fighting, environmental protection,customsduties andpoliceduties.

TheNornenclass consists of five vessels of the ST-610 design by Skipsteknisk AS. The contract for the delivery of these vessels was signed on November 24, 2004, and they were delivered with 12-14 months. The vessels were leased for 15 years. These purpose-built vessels replaced the five oldest vessels in the inshore coast guard (No:Indre Kystvakt). They provided significantly improved capabilities in all regards compared to the vessels they replaced. This included seaworthiness (they are larger), towing capacity,fire fightingand environmental protection (collecting oil spills). The aft deck is for the winch only (not for helicopter landing).

TheReine class patrol vesselshares the same basic design, but is modified for the use of the NorwegianSea Home Guard.