598 NICHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE

Fig 2—Cellular Double Bottom,

Cellular Double Bottom.—Fig. 2 showing how the centre girder
is connected to the floors and to the inner and outer bottom.
A—A continuous fore and aft centre plate.
a i—Continuous fore and aft angles connecting centre plate

to inner bottom.
a 2—Continuous fore and aft angles connecting centre plate to

the flat plate keel.
/3—Short vertical angles connecting the floor plate to the centre

plate.

Fig 3.—Cellular Double Bottom