WorldAugust 30, 2026

semisub

SEM-ee-sub

Definition

A type of floating vessel or drilling rig, short for 'semisubmersible', that maintains stability by having a portion of its structure submerged below the waterline.

Etymology

Derived from the prefix 'semi-', meaning half, and 'submersible', referring to the ability to partially submerge to improve stability in heavy seas.

In the news

The article uses the term to describe a specific type of offshore rig that Northern Ocean is preparing to bring back into operation for 2027.

California floating wind lease heads to court

Read the full article ↗

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