The 47' MLB is designed to weather hurricane force winds and heavy seas, capable of surviving winds up to 60 knots (110 km/h), breaking surf up to 6 m and impacts up to three G's. If the boat should capsize, it self-rights in less than ten seconds with all equipment fully functional.
The boat's hull and superstructure are constructed entirely from 5456 marine grade aluminum. Designed with a hard chined deep "V" planing hull, the 47' MLB exceeds its displacement speed. The frame is composed of 17 vertical bulkhead frames, each of which is welded to the deck and hull, and five of which are watertight.
Situated less than 1 ft (30 cm) from the water line are recessed retrieval wells, allowing for easier recovery of persons and jetsam, and easier boardings. A watertight survivor's compartment is equipped for comprehensive first aid. It is situated at the combined center of rotation of the ship.
|Operators:||United States Coast Guard|
|Displacement:||18 t (20 short tons)
|Length:||14.6 m (47 ft 11 in)
|Beam:||4.27 m (14 ft 0 in)
|Draught:||1.37 m (4 ft 6 in)
|Propulsion:||2 × Detroit Diesel 6V92TA DDEC-IV engines, 435 hp (324 kW) each
1,500 liter (373 usable imperial gallons) fuel capacity
|Speed:||25 knots (29 mph; 46 km/h) maximum
22 knots (25 mph; 41 km/h) cruising
|Range:||200 nmi (370 km) cruising
|Complement:||34 Persons, 4 crew, 30 passengers
|Armament:||1 × M240B machine gun (optional)|
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