main ballast tank

Main ballast tanks are in pairs; one on each side of the boat.

It was able to surface by means of an emergency main ballast tank blow.

The only chance of stopping that was to blow the main ballast tanks.

Furthermore the main ballast tanks could be blown from either end of the ship.

With that command the vents were opened and the main ballast tanks flooded.

Behind the pilot are the main ballast tank and fuel tank.

He ordered the main ballast tank vents opened, but it was too late to stop his ascent.

In general, main ballast tanks have the Kingston valve atop the tank.

Control of the main ballast tanks are lost and the ship ascends uncontrollably.

Chief of the Watch, prepare to start the low-pressure blower on all main ballast tanks.

He then ordered the sub be scuttled by flooding all the main ballast tanks.

After the exercise, Tautog performed an emergency main ballast tank blow from her test depth.

Commander Morris, open all main ballast tank vents.

"Main ballast tank's empty," the diving officer reported.

Two main ballast tanks with forward and aft trim tanks allow the boat to dive.

He opened and shut four main vent, to expel the air in four main ballast tank.

This was almost completely surrounded by her external hull which also contained the main ballast tanks and most of her fuel.

The second smashed through a main ballast tank and the pressure hull to explode in the after engine room, killing the four men then working there.

The spray from the opened main ballast tank vents nearly engulfed the men as they made the final closure of the bridge clamshell.

A hole was burned in the top of the Number Two main ballast tank and lines from two air banks were severed.

On 12 October, the S-boat ran out of reserve fuel in the number-three main ballast tank.

"Flood the main ballast tanks.

Main ballast tanks are empty, and all diesel fuel and freshwater tanks have been blown.

Emergency Blow--Blowing the water out of the main ballast tanks using ultra-high-pressure air.

Blow all main ballast tanks.'