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The Coast Guard’s 370th, and final, response boat-small II (RB-S II) entered the water for the first time following delivery to Station Honolulu, Hawaii, in December 2019.

The Coast Guard accepted delivery of the final RB-S II in Jeanerette, Louisiana, Nov. 8, 2019.

The Coast Guard placed a delivery order on Feb. 4, 2019, for 20 response boats-small II (RB-S IIs), worth approximately $8.5 million, with Metal Shark Boats of Jeanerette, Louisiana.

Response Boat - Small II

For more photos of the Response Boat-Small II, visit the image gallery on Flickr.

The response boat-small II is a high-speed, easily deployable asset designed to operate year-round in shallow waters along coastal borders.

Why this program?

The Coast Guard currently operates more than 400 Defender-class RB-S boats, making it the largest vessel class in the Coast Guard fleet. The RB-S II, designed with an increased emphasis on function and crew comfort, is gradually replacing the Defender-class RB-S as the older assets reach the end of their service life.

How is the RB-S being acquired?

The RB-S replacement is one of the largest boat buys of its type for the Coast Guard. Under a phased, competitive procurement, the Coast Guard selected two vendors’ designs to compete in a down select process, testing each design against Coast Guard requirements and to verify industry’s ability to deliver to those requirements at a reasonable price. The Coast Guard awarded a delivery order valued at approximately $13 million Sept. 26, 2011, to Metal Shark Aluminum Boats for the production of 38 RB-S IIs. The contract allows for the procurement of up to 500 boats. Up to 470 boats will be delivered to shore units throughout the Coast Guard to perform port and waterway security, search and rescue, drug and migrant interdiction, environmental and other law enforcement missions. Up to 20 boats may be ordered by Customs and Border Protection and up to 10 by the U.S. Navy.



The response boat-small is a multi-mission platform, used for the full range of Coast Guard missions, including: search and rescue; vessel boarding team deployment and law enforcement missions; port security; drug and migrant interdiction and environmental response operations.


  • Length: 28 feet 8 inches
  • Beam: 8 feet 5 inches
  • Draft: 1 foot 8 inches
  • Displacement: 8,300 pounds
  • Maximum Speed: 40+ knots
  • Range: 150 nautical miles at cruising speed


  • Functional design and focus on crew comfort
  • Standardized communications and navigation suite
  • 360 degrees visibility
  • State-of-the-art shock-mitigating seats
  • Fore and aft gun mounts with a forward shock-mitigating gunners seat
  • Crew restraints
  • Lowering cabin windows
  • 2 NAVNET 3D displays for secondary navigation
  • Cabin integrated ballistics panels for crew protection
  • Left-side coxswain placement