water ballast tank


Also found in: Acronyms.

water ballast tank

[′wȯd·ər ¦bal·əst ‚taŋk]
(naval architecture)
A tank in which sea water for ballast is confined.
References in periodicals archive ?
In the compartments of a water ballast tank AE-sensors were mounted for monitoring acoustic emission (Fig.
In addition, the Top version has a memory for up to 50,000 readings in up to 999 batches so large volumes of reading data can be recorded, analysed and archived as inspection records for the preparation of the Coating Technical File required by the IMO PSPC Salt Water Ballast Tank coating regulations that have recently come into force.
The 235-metre Arendal, chartered by BP and bound for America, has two 2ft cracks on the deck near the water ballast tank.
A variable water ballast tank system will permit the vessel to maintain neutral buoyancy regardless of passenger load.
Crude oil cargo and flood water were carefully pumped from the tanker's heavily damaged number one starboard water ballast tank and the number one center cargo oil tank while dozens of response contractors worked to contain oil that had spilled into the waterway.
We know how important it is to maintain good condition in key parts of a vessel, such as the sea water ballast tank, and we fully support this initiative to improve industrywide safety standards.
When applied in enclosed environments containing various chemically-active cargoes and subjected to temperature cycles in the presence of moisture, it was found that the PPG SIGMASHIELD MTC system offered best-in-class performance, exhibiting the smallest amount of undercreep (similar to that of a water ballast tank coating system).
Work will include clean and gas free tanks, voids, cofferdams and spaces, flight deck non-skid renewal, salt water ballast tank preservation, main engine overhaul, main diesel generator inspection and cleaning, annual lifeboat certification, galley and laundry ventilation system cleaning, docking and undocking, propeller shaft and stern tube inspections, bow thruster propeller polishing, sea valve replacement, and underwater hull cleaning and painting.
Hempadur Quattro XO 17820 was developed for water ballast tanks in new vessels, however it can also be used as a uni-primer for most vessel areas - above and below the waterline - providing high quality performance and peace of mind for customers.
Other works will comprise upgrades to different pipelay system, the construction of new water ballast tanks and conversion of old ones into fuel oil tanks in a bid to optimise the vessel's capabilities.
Hempel Quattro Photo IMO requires the use of a PSPC certified coating for water ballast tanks and this launch of a new range of pure epoxy coatings represents the latest state-of-the-art in pure epoxy technology which delivers optimized performance based on customer requirements.