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liberty ship

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cargo ships built in the United States during World War II

Key facts

Name
Liberty ship
Builders
18 shipyards in the United States
Operators
U.S. Maritime Commission & War Shipping Administration , United States Navy (attack cargo ships only)
Succeeded by
Victory ship
Cost
US$ 2 million ($46 million in 2025) per ship
Planned
2,751
Completed
2,710
Active
2 (Traveling museum ships )
Class type
Cargo ship
Tonnage
7,176 GRT , 10,865 DWT
Displacement
14,245 long tons (14,474 t)
Length
441 ft 6 in (134.57 m)
Beam
56 ft 10.75 in (17.3 m)
Draft
27 ft 9.25 in (8.5 m)
Propulsion
Two oil-fired boilers triple-expansion steam engine single screw, 2,500 hp (1,900 kW)
Speed
11–11.5 knots (20.4–21.3 km/h; 12.7–13.2 mph)
Range
20,000 nmi (37,000 km; 23,000 mi)
Complement
38–62 USMM 21–40 USNAG

via Wikipedia infobox

Wikidata facts

Instance of
cargo ship
Country of origin
United States
Followed by
Victory ship
Image
SS John W Brown.jpg
Width
17.3
Length
134.57
Speed
11
Show 8 more facts
Commons category
Liberty ships
topic's main category
Category:Liberty ships
draft
7.70
beam
17.34
different from
Liberty
native label
Liberty Ship
vehicle range
20000
nominal power output
2500
Sources (7)

via Wikidata · CC0

~38 min read

Encyclopedic overview

Liberty ships are a class of cargo ship built in the United States during World War II under the Emergency Shipbuilding Program. Although British in concept, the design was adopted by the United States for its simple, low-cost construction. Mass-produced on an unprecedented scale, the Liberty ship came to symbolize U.S. wartime industrial output.

The class was developed to meet British orders for transports to replace ships that had been lost. Eighteen American shipyards built 2,710 Liberty ships between 1941 and 1945 (an average of three ships every two days), easily the largest number of ships ever produced to a single design.

Excerpted from Wikipedia’s “liberty ship” article, available under the CC BY-SA 4.0 licence.

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