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Riverine Command Boat

Last updated: 14 Oct 2021

The RCB has a crew of four to eight, but can transport up to 15 personnel. It is equipped with several universal topside mounts and a remote-operated small arms mount (ROSAM) for mission-dependent armament. The ROSAM allows for a safer mission by keeping Sailors inside the boat while operating the weapon. It also has an automatic target-locking capability, which allows easier and more accurate operation during high seas and high-speed operations. Topside mounts can hold any type of manned machine gun or grenade launcher.

The RCB cockpit is constructed with armor plating, protecting the crew and engine compartment against small arms fire and explosion fragments during operations.
VIDEO | 01:11 | Quick Facts - U.S. Navy Riverine Command Boats

RCBs serve as part of a Coastal Riverine Force (CRF) unit, acting as liaison between shallow water riverine units and standard deep-water naval vessels. In 2012, the Navy merged riverine forces and Maritime Expeditionary Security Forces to form the Coastal Riverine Force. The Force is organized into two groups with seven squadrons.

Squadrons 1, 3 and 11 are home ported on the west coast while squadrons 2, 4, 8 and 10 are home ported on the east coast. The force currently consists of both active and reserve service members who man and operate more than 100 boats, ranging from 25-foot patrol boats to the new 85-foot Mark VI patrol boat.

The primary mission of a CRF is to conduct maritime security operations across all phases of military operations by defending the Navy's high-value assets, critical maritime-infrastructure, ports and harbors both inland and on coastal waterways. This includes exercises, security force assistance and personnel exchange. A CRF is capable of conducting 24-hour operations in all weather conditions and climates.
General Characteristics
Length: 53 feet
Beam: 12 feet
Draft: 36 inches
Speed: cruise 35+ knots; sprint 40+ knots
Range: 250+ nautical miles
Armament: 4 mounts for M2 .50 caliber, 7.62mm M240B, Mk19 40mm machine guns, or Mk 44 GAU-17 7.62mm guns; foundation for remote-operated weapons system


Point of Contact
Naval Sea Systems Command
Office of Corporate Communication (SEA 00D)

Washington, D.C. 20376

(202) 781-4123


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