Maritime Reporter Magazine December 1995, 28 page
Bulk carriers' different arrangements of fuel tanks: a) double
Types of Combination Carriers
Ballast Tank Arrangements
A Guide To Ballast Tanks On Ships
Ballast operation at sea, ballast exchange requirement & more
Tanks and Pumping Systems
U-boat Archive - Design Studies - Type XXI
SS-417 USS Tench Patch - Version A, Submarine Patches, Navy Patches
BALLAST - Translation in Spanish - bab.la
CASE MATERIALS, Public Involvement in Maritime Facility Development