Construction vessels

Pioneering Spirit

In service · Source reviewed 2026-09-09

Built to install and remove offshore platforms and lay pipelines. The ranking uses hull length, excluding projecting lifting and pipelay equipment. Sources ↓

Pioneering Spirit
Cavernia / Wikimedia Commons · CC0. Resized and converted to WebP; directory thumbnail cropped.

LENGTH OVERALL382 m

GROSS TONNAGE403,342 GT

LENGTH RANK IN DIRECTORY#161

Compare this ship →Explore its size →Why it was built ↓Tracking dashboard →

Vessel particulars

Reported values from the references below. Cruise-ship beam uses the waterline measurement where supplied. Year may refer to delivery or first service.

Length overall	382 m ↗
Gross tonnage	403,342 GT ↗
Beam	124 m ↗
Year in source	2014 ↗
Operator	Allseas ↗
IMO	9593505 ↗
MMSI	249110000 ↗

Status reported by the linked vessel reference.

Its place in the fleet

This vessel ranks 161 by reported length and 1 by gross tonnage in this directory. Equal measurements share a rank.

Top 100 by length →Top 100 by gross tonnage →Construction vessels →

Length comparison

Pioneering Spirit · 382 m

Seawise Giant · 458.45 m

Linear bars compare reported lengths only. They are not hull drawings. Reference measurement.

Where is it now?

This vessel is on the AIS watchlist. The map shows its most recently received report when one is available. Open the vessel map →

BEHIND THE PARTICULARS

Built for a purpose

Builder / location: Daewoo Shipbuilding & Marine Engineering, Okpo, South Korea
Original role: Single-lift offshore construction, removal and pipelaying
Power and propulsion: Diesel-electric; 12 azimuth thrusters

Why it was built

Pioneering Spirit was designed to remove or install large offshore structures in single lifts, reducing how much dismantling or assembly must happen at sea. Its enormous bow opening can surround a platform. The 2026 Allseas specification lists a 60,000 tonne topsides capacity and 20,000 tonne jacket capacity.

Allseas: 2026 specifications ↗

Positioning is part of the job

Twelve azimuth thrusters move and position the ship. Allseas lists DP3 dynamic positioning and 95,000 kW of installed power. For this vessel, holding a controlled position during offshore work is as important as making an ocean passage. The power system and wide hull support a specialised construction operation.

Allseas: 2026 specifications ↗

Where it has worked

Allseas documents North Sea work including offshore platform removal and the installation of converter infrastructure for offshore electricity connections. Its working history spans both older oil-and-gas infrastructure and newer energy projects. The hull length is 382 metres; equipment deployed for pipelaying extends the overall working arrangement, which should not be silently substituted into the hull-length ranking.

Allseas: vessel and projects ↗Allseas: 2026 specifications ↗

Historical information reviewed 9 September 2026. Documented journeys are not live vessel positions.

Sources & measurement notes

Length measures the vessel from end to end. Gross tonnage measures enclosed volume, not weight. Historical GRT is excluded from the GT ranking. Published figures can differ by configuration and measurement precision.

Pioneering Spirit ↗
Vessel identity, dimensions, tonnage and historical status. Historical gross register tonnage is not treated as modern GT.
Allseas: vessel specifications, 2026 ↗
VesselFinder: identity and service report ↗

The main specification source is identified above. Additional references may report different configurations or precision. How this directory is compiled.