moon pool

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moon pool

n
(Mining & Quarrying) (in the oil industry) an open shaft in the centre of the hull of a ship engaged in deep-sea drilling through which drilling takes place
References in periodicals archive ?
Diving support vessel: Assigned where a diving system has been installed and where special consideration has been given to the launch and recovery systems for diving operations, including the strength and continuity in way of moon pools, large hatches, heavy loads, etc.
The ship is also equipped with two moon pools and a helideck.