page_title: Heavy-lift ship
hierarchical_section_title: Heavy-lift ship
caption_attribution_description: English: RFA Sir Tristram &amp; MV Dan Lifter. Sir Tristram getting a ride home after the Falklands war Information about MV Dan Lifter may be found at IMO 8106068.A ship can change name and flag state through time, but the IMO number remains the same through the hull's entire lifetime. As a result, it can be useful to identify a ship by using the IMO number.
context_page_description: A heavy-lift ship is a vessel designed to move very large loads that cannot be handled by normal ships. They are of two types:
  Semi-submersible ships that take on water ballast to allow the load—usually another vessel—to be floated over the deck, whereupon the ballast is jettisoned and the ship's deck and cargo raised above the waterline.
  Project cargo ships that use at least one heavy-lift crane for handling heavy cargo and sufficient ballast to assure stability and sea-keeping properties.
context_section_description: A heavy-lift ship is a vessel designed to move very large loads that cannot be handled by normal ships. They are of two types:
  Semi-submersible ships that take on water ballast to allow the load—usually another vessel—to be floated over the deck, whereupon the ballast is jettisoned and the ship's deck and cargo raised above the waterline.
  Project cargo ships that use at least one heavy-lift crane for handling heavy cargo and sufficient ballast to assure stability and sea-keeping properties.
caption: MV Dan Lifter returns RFA Sir Tristram to the United Kingdom in 1983 after she was badly damaged during the Falklands War of 1982.
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