Semi-submersibles

former offshore oil drilling rig

former research vessel owned by the United States Navy

offshore oil rig, sank in 1982

semi-submersible heavy lift ship

large crane vessel

mobile marine spacecraft launch platform operated by Sea Launch

semi-submersible crane vessel

ship built in 1978

ship type

oil platform built in 1974

semi-submersible platform built in 1996

Semi-submersible heavy-lift ship

semi-submersible launched in 1978

Semisubmersible heavy-lift ship

semi-submersible crane vessel launched in 2019, owned by Heerema Marine Contractors

ship built in 1983

Semi-Submersible Heavy-Lift Vessel

semi-submersible crane vessel

Q4000 is a multi-purpose oil field construction and intervention vessel ordered in 1999 by Cal Dive International, and was built at the Keppel AmFELS shipyard in Brownsville, Texas for $180 million. She was delivered in 2002 and operates under the flag of the United States. She is operated by Helix Energy Solutions Group. The original Q4000 concept was conceived and is owned by SPD/McClure. The design was later modified by Bennett Offshore, which was selected to develop both the basic and detailed design.

iron-clad screw steamer belonging to United States Navy

semi-submersible platform launched in 2011

ship built in 1977