Dimensions 143’6” (over all) x 15’4” (maximum diameter)
x 15’9 3/8” (maximum beam) and a displacement of 331 (light)-432 (total
submerged including superstructure) tons. Surface buoyancy 21% of surface
displacement. Metacentric height submerged 15”. Metacentric height light 11”.
Range of positive stability 180 degrees. Fitted out with a conning tower of
non-magnetic metal accessible from the hull by a watertight hatch. A well
equipped navigation bridge was on top of this tower about 10 feet above the
water level.
Total horsepower of the main multipolar direct current
motors (2x-160 continuously and 310ho in one hour)620hp and of the heavy
oil-fuelled 4-cylinder vertical inverted type motors 760hp. Each
Guaranteed surface speed was 14 knots. Fuel endurance
80 hours or 1.120 knots. Standard range with a cruising speed of 11 knots was
2.100 knots and maximum range with same speed 3.500 knots. Guaranteed maximum
submerged speed 11 knots with an endurance of one hour. With a speed of 6 knots
was the range 50 knots. Diving time from light to submerged condition 6 minutes
and from intermediate to submerged condition 3½ minutes. The hull proper was
constructed of steel allowing to dive to a depth of 200 feet. Main bunker
capacity is around 2.500 US gallons with the possibility of almost doubling
this capacity by using the ballast tanks for fuel storage.
Armament consisted of 4-45cm internal in the bow
fitted torpedo tubes firing torpedoes with a length of 5,2 metres. Each tube
was loaded and in this manner available for immediate response. The torpedoes
were launched by air pressure controlled by the commanding officer or his
substitute located at one of the two withdrawable periscopes. There were at the
same time two tubes opened. When these two torpedoes were fired, could within
seconds the other two tubes be opened. Standard was no storage for spare
torpedoes available.
Source
Archive Kon. Mij. De
Schelde 1875-1960 (Municipality Archive Vlissingen) T 214.802.
