Assault Support Patrol Boat

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. == History == The ASPB was approximately 50 feet (15 m) long, its hull was constructed of 7⁄32 inch (5.6 mm) steel, from the gunwale 2 inches (51 mm) up it was 1⁄8 inch (3.2 mm) steel, its superstructure was 1⁄4 inch (6.4 mm) aluminum which provided protection against 57mm recoilless rifle rounds and armor-piercing bullets up to .50 caliber in size.

Source: Wikipedia — Assault Support Patrol Boat (CC BY-SA 4.0)

Assault Support Patrol Boat

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. == History == The ASPB was approximately 50 feet (15 m) long, its hull was constructed of 7⁄32 inch (5.6 mm) steel, from the gunwale 2 inches (51 mm) up it was 1⁄8 inch (3.2 mm) steel, its superstructure was 1⁄4 inch (6.4 mm) aluminum which provided protection against 57mm recoilless rifle rounds and armor-piercing bullets up to .50 caliber in size.

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Source: Wikipedia "Assault Support Patrol Boat" · CC BY-SA 4.0

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