Floatation assistance

Several methods of floatation assistance in the open sea are usually provided for the number of personnel on board (FOB) the installation ... 

The separation of desired particles from a heterogeneous mixture of particles dispersed in a liquid is called flotation, not floatation. A gas is bubbled through the mixture and collects selectively on the desired particles, thereby lowering their density and floating them to the top where they can be skimmed away. This is known as gas assisted flotation, froth flotation. 

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