Vehicles · Enlarged supertanker · historical Seawise Giant configuration
How long is a seawise giant?
Lloyd’s Register Foundation’s maritime history gives Seawise Giant a length overall of 458.45 meters after an additional cargo section was inserted.

458.45 m
Sourced measurement- Measurement
- Length overall · enlarged hull
- Subject or version
- Enlarged supertanker · historical Seawise Giant configuration
- In feet, rounded
- 1,504.1 ft (1 ft = 0.3048 m)
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A little more perspective
Lloyd’s Register Foundation’s maritime history gives Seawise Giant a length overall of 458.45 meters after an additional cargo section was inserted. The record therefore refers to the enlarged supertanker, rather than its shorter original hull. The artwork shows the historical Seawise Giant appearance with the long cargo deck intact.
The cargo deck accounts for most of the bow-to-stern extent, while the accommodation block sits near the stern. Later names for the same vessel include Jahre Viking and Knock Nevis; those names should not be mistaken for additional ships in this comparison. The length reference remains separate from draft, beam and deadweight tonnage.
Quick facts
Lloyd’s Register Foundation’s maritime history gives Seawise Giant a length overall of 458.45 meters after an additional cargo section was inserted.
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Sources and measurement notes
- Lloyd’s Register Foundation: maritime science and technology, enlarged Seawise Giant
- Guinness World Records: largest ship by deadweight, names and 458.45-meter length
Source review recorded . Maintained by Ishan Karunaratne. Suggest a correction with a source and the exact measurement being compared.