The Mark VI is a class of patrol boat for the United States Navy, designed to patrol riverine and littoral waters. BuildersSAFE Boats InternationalOperatorsUnited States NavyUkrainian NavyPreceded byRiverine Command BoatCostUS$15 million per shipBuilt2015–2017In commission2016–presentPlanned12On order12Completed12TypePatrol boat Displacement144,000 lb (65,000 kg) (72 tons)Length84.8 ft (25.8 m)Beam20.5 ft (6.2 m)Draft4 ft (1.2 m)PropulsionMTU 16V2000M94 (x2), 5,200 HPSpeed45 knots (52 mph; 83 km/h)Range750 nmi (860 mi; 1,390 km) at 25 knots690 nmi (790 mi; 1,280 km) at 30 knotsTroops8Complement10 crewArmament2 × Mk 38 Mod 2 25 mm chain gunsM2HB .50 caliber (12.7 mm) machine gun(s)M240B 7.62 mm machine gun(s)