Assault Support Patrol Boat

Assault Support Patrol Boat

ASPB in South Vietnam c.1968
Class overview
Name	ASPB (Assault Support Patrol Boat)
Operators	See Operators
Completed	86
General characteristics
Type	Riverine patrol boat
Length	50 ft (15 m)
Propulsion	2 × 430hp General Motors 12V71 diesel engines
Speed	14.8 knots
Range	130 nautical miles (240 km; 150 mi)
Complement	5
Armament	two Mk 48 turrets with either 20 mm cannon or .50 cal machine guns two single M60 machine guns or Mk 21 machine guns one Mk 2 Mod 0/1 .50 cal machine gun/81mm mortar

The Assault Support Patrol Boat (ASPB) (also known as the Alpha Boat), was a heavily armed and armored riverine patrol boat developed by the United States Navy for use in the Vietnam War from late 1967.