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Griselda carries spare set of Hofman racing vans and can be lied three foot clear in smooth water with ballast-tank swung aft. The others do not lift, clear of water, and are recommended for beginners. Maginnis motor, Radium relays and Pond generator. Bronze breakwater forward, and treble reinforced forefoot and entry.
To the right of the foot of the conning-tower ladder stood the ballast-tank man; and when the captain from the foot of his periscope gave the word after first looking forward, aft, and to each side of him to see that all hands were at their proper stations it was the ballast-tank man who went violently at once into action.
To eliminate this tendency, there is a hydrostatic safety system which automatically causes the discharge of water from the ballast-tank when dangerous pressures are reached, thus bringing the submersible to a higher level where the pressure on the hull will not be so severe.
The examination of the hold led to one curious and not easily explained discovery. The Ella was in gravel ballast, and my search there was difficult and nerve-racking. The creaking of the girders and floor-plates, the groaning overhead of the trestle-trees, and once an unexpected list that sent me careening, head first, against a ballast-tank, made my position distinctly disagreeable.
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