Pioneering Spirit
Hanwha Ocean (DSME) · In service
Allseas' flagship for single-lift platform installation and removal, and among the fastest pipelay vessels afloat.
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ALL Allseas
Switzerland · Independent (family-owned) · HQ: Châtel-Saint-Denis
The offshore contractor that built the biggest ship in history to lift oil platforms whole.
Ships here1
Biggest shipPioneering Spirit
Group / allianceIndependent (family-owned)
Founded1985
MarkALL
The fleet
1 in fleet
What Allseas operates
Good to know
Allseas, in a few facts
- Owns and operates Pioneering Spirit, the largest ship ever built by gross tonnage and the widest ever built.
- Performed the heaviest lift in marine history — the 24,200-tonne Brent Delta topsides, removed in one motion in 2017.
- Founded and still owned by Edward Heerema; the company has laid more subsea pipeline than any other contractor.
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