Marine Oily Handling Devices and Pollution Prevention. Chapter 1 Lesson 7 Bilge and ballast. 1.8 Bilge and ballast. A fire and bilge pump has suctions from sea, bilge main and engine room bilge, with discharges to fire main, oily water separator and overboard.
Chapter 1 Lesson 7
Bilge and ballast
Bilge main dia. d1=1.68 +25 mm
Branch dia. d2=2.16 +25 mm
d2 not to be less than 50 mm and need not exceed 100 m.
d1 must never be less than d2
L = length of ship in m;
B = Breadth of ship in m;
D = Moulded depth at bulkhead deck in m;
C = Length of compartment in m.