Page 300 - statbility for masters and mates

288 Ship Stability for Masters and Mates
or
but at a small angle and
and
Example
Fig. 32.1
v2
GZ gEr B1Z
GZ GMEsin y B1Z BGEcos y
v2
; GM siny gEr BGEcosy
tan y v2 BG gErEGM
A ship turns to port in a circle of radius 100 m at a speed of 15 knots. The GM is 0.67m and BG is 1m. If g 981cm/sec2 and 1 knot is equal to 1852 km/ hour, ®nd the heel due to turning.
Ship speed in m/sec 15 1852 3600
v 7:72 m/sec
tan y v2 BG gErEGM