The main differences between the PV-1 and the B-34 were the inclusion of special equipment in the PV-1, adapting it to its patrol bombing role. The maximum fuel capacity of the PV-1 was increased from 1,345 gal (5,081 L) to 1,607 gal (6,082 L), to increase its range; the forward defensive armament was also reduced for this reason.

The main differences between the PV-1 and the B-34 were the inclusion of special equipment in the PV-1, adapting it to its patrol-bombing role. The maximum fuel capacity of the PV-1 was increased from 1,345 gal (5,081 l) to 1,607 gal (6,082 l) to increase its range; the forward defensive armament was also reduced for this reason.

The PV-1 was very similar to the B-34, but it had reduced defensive armament and more fuel. The bomb bay was redesigned again, to enable the PV-1 to carry a torpedo. A radar was installed in the nose.

When the war began for the United States, the US Army seized 264 Ventura aircraft being constructed for the RAF. They were designated B-34 Lexington (with original specifications) and B-37 (with less powerful 1,700-horsepower Wright R-2600-13 radial engines) bombers.

b-34/37和pv“文图拉”/“捕鲸叉 受到“郝德逊”成功的鼓舞，洛克希德公司在18型“北极星”的基础上为英国皇家空军设计了更先进的“双发轰炸机（Bombing Twin）”。

2019年8月30日 · 这些过剩的飞机后来被美国陆军航空兵飞越，命名为b-34进入现役，作为海上巡逻机。 美国海军也对这种飞机产生了兴趣，接收了大约1600架，命名为PV-1“文图拉”。

2023年8月1日 · In the United States, it was initially referred to as the B-34 “Lexington”, named after the American Revolutionary War Battle of Lexington. But when transferred to the Navy, the designation changed to PV-1 Ventura, with “PV” standing for Patrol Bomber and “V” for manufacturer Lockheed’s Vega subsidiary.

b-34/37和pv“文图拉”/“捕鲸叉” 受到“郝德逊”成功的鼓舞，洛克希德公司在18型“北极星”的基础上为英国皇家空军设计了更先进的“双发轰炸机（Bombing Twin）”。

b-34轰炸机根据任务的不同，可以装载不同的炸弹，在执行轰炸地面目标任务的时候，它可以携带最多1400千克的炸弹；如果要执行反潜任务，它可以携带6枚单重1471千克的深水炸弹；或者是携带1枚鱼雷，攻击水面舰艇。

Built in 1943 as PV-1 33260 for the US Navy but diverted to the Royal Canadian Air Force as serial 2186. It served until August 1950 when it was struck off charge and stored until August 1955 when it returned to the USA as N75384. In 1957 it was converted as a Howard Super Ventura executive transport with the new registration N9060.