World War Photos

PB4Y-1 in flight off Norfolk Virginia 1943

The PB4Y-1: Navy’s Early Adaptation of the B-24

The PB4Y-1 was the US Navy’s first version of the B-24 Liberator, adapted for maritime patrol duties. The initial PB4Y-1s were essentially repurposed B-24Ds taken from the USAAF inventory and modified to meet the Navy’s requirements. These early models retained many features of their Army counterparts, but some had Consolidated or ERCO turrets added in the bow.

The PB4Y-1 played a significant role in the early stages of World War II, when the US Navy was still in the process of expanding its long-range anti-submarine warfare (ASW) capabilities. They were used to patrol America’s coastlines and extend patrols out from America’s coastlines. However, as the war progressed and the US Navy received more purpose-built PB4Y-2 Privateers, the PB4Y-1 was gradually phased out of frontline service.

Key Features and Modifications of the PB4Y-1

• Based on B-24D: The PB4Y-1 was derived from the B-24D model of the Liberator.
• Minimal Modifications: The early PB4Y-1s saw minimal modifications from their Army B-24D counterparts.
• Bow Turrets: Some PB4Y-1s received Consolidated or ERCO turrets in the bow for improved defensive capabilities.
• Olive Drab Paint Scheme: Initially, the PB4Y-1s were painted in the standard USAAF Olive Drab over Neutral Gray camouflage scheme. They were later repainted in the Navy’s blue and gray scheme.
• Bureau Numbers: As with all Navy aircraft, the PB4Y-1s were assigned unique Bureau Numbers.

Operational History

• Early War Service: The PB4Y-1 entered service in 1943 and was primarily used for coastal patrol and ASW missions.
• Squadrons: The PB4Y-1s were flown by various US Navy squadrons, including VPB-118 and VPB-119.
• Photo-Reconnaissance Role: Some PB4Y-1s were also modified for photo-reconnaissance missions and were designated PB4Y-1Ps. These aircraft continued in service with the Navy after World War II.

Transition to the PB4Y-2

With the introduction of the PB4Y-2 Privateer in 1944, the PB4Y-1 gradually became obsolete. The PB4Y-2, with its significantly redesigned fuselage, single vertical tail, and other improvements, was better suited for the demanding long-range patrol missions. By the end of the war, the PB4Y-1 had been largely replaced by the PB4Y-2 in frontline service.