Offshore drilling units — jackups, semisubmersibles and barge rigs — for operators and brokers sourcing in the harder-to-reach end of the used-equipment market. Oil Rigs Now’s offshore inventory (8 units: 3 barge, 4 semisubmersible, 1 jackup) spans water depths and hookloads from shallow-water barge work through deepwater semisubmersible capability. These are specialist, high-value transactions; survey and transfer requests are passed to Total Drilling Supply.
Buyer Guidance
Jackup, semisubmersible or barge — matching the unit to the water
Barge rigs work shallow, protected water (bays, marshes, rivers) where a jackup’s legs or a semisub’s mooring aren’t practical or necessary — the lowest day-rate offshore option where the environment allows it. Jackups are the workhorse for shallow-to-moderate water depth (typically up to a few hundred feet), self-elevating on legs jacked to the seabed for a stable drilling platform. Semisubmersibles operate in deeper water on a floating, moored or dynamically-positioned hull, trading higher day rates and complexity for water-depth capability no jackup or barge can reach. Get the water depth and seabed conditions for your target location settled before you start comparing units — it eliminates most of the field immediately.
What “class” and water-depth rating actually mean when comparing units
Classification (ABS or equivalent) and stated water-depth rating are the two numbers that matter most on an offshore spec sheet, and both need reading carefully: a rated water depth is a design capability, not a guarantee the unit is currently certified to operate at that depth today — ask for current class status and survey history, not just the nameplate rating. Drilling depth capacity, variable deck load, and for jackups the leg length and jacking system, are the next tier of comparison once water depth has narrowed the field.
What due diligence looks like on an offshore transaction
These are larger, slower transactions than a land rig purchase: expect a full technical survey, class society documentation review, and — depending on the unit’s history and intended destination — flag-state and import considerations if the rig is moving between jurisdictions. Build survey and inspection time into your timeline from the start rather than treating it as a closing formality; it routinely determines the final price as much as the initial spec match does.
Buying a stacked or idle rig
Offshore units that have been stacked or retired from a fleet need their own checks before purchase, including class status: how long the rig has been stacked and how it was preserved, what equipment has been removed, which certifications have lapsed, and what it will take to reactivate it. See the guide to buying abandoned and stacked rigs for the inspection checklist, the cost categories to plan for and the questions to ask a seller.
