Page 112 - Practical Ship Design
P. 112
7he Design Equations 79
(iv) Rudder displacement = 0.13 (Ar)3’2 (3.18)
where A, = rudder area in m2.
(v) Propeller displacement = 0.01 (4’ (3.19)
Other items which may affect the displacement are sonar domes, and the lost
buoyancy of bow and stern thrust tunnels, recesses for stabiliser fin stowage,
recesses for dredge pipe trunnion slides, moon pools, etc. It may be noted that lost
buoyancy effects which at a later stage and in “as fitted” documentation are usually
dealt with as lost buoyancy and deducted from the hydrostatics are, in general,
better treated as added weights in design work.
