HOME | DD

Description
Notes: The Type II.D had additional saddle tanks fitted to the sides of the external hull. These saddle tanks were used to accommodate additional diesel storage tanks. The diesel oil would float atop the saddle tanks and as the oil is consumed, sea water would gradually fill the tanks to compensate for the positive buoyancy. The range was nearly doubled to 3,450 nmi (6,390 km; 3,970 mi) at 12 knots (22 km/h; 14 mph) and enabled the Type II to operate for longer durations. A further development was the propellers were fitted with Kort nozzles , intended to improve propulsion efficiency.Class Overview
Name: Type II.D–Class Littoral Submarine
Builders: Hergenröther Shipyard
Operators: Auf Tod-Pack (1940 to Present)
Cost: 1.6 Million A/M Per-Ship (1939)
Planned: 20
Canceled: 4
Built: 16
Submarines in Class:
U137 to U152 (In-service)
Predecessor: Type II.C -Class
Successor:
Type III-Class (Canceled)
Type IV-Class (Canceled)
Type V -Class

General Characteristics

Type: Littoral Submarine
Displacement:
Surfaced: 314 t (309 long tons)
Submerged: 364 t (358 long tons)
Full Load: 460 t (453 long tons)
Length: 43.97 m (144 ft 3 in)
Beam: 4.916 m (16 ft 1.5 in)
Height: 8.10 m (26 ft 7 in)
Draught: 3.93 m (12 ft 11 in)
Propulsion:
2 × MWM RS 127 S 6-cylinder diesel engines, 700 PS (690 shp; 515 kW)
2 × SSW PG VV 322/36 double-acting electric motors, 360–375 PS (355–370 shp; 265–276 kW)
Speed:
Surfaced: 12.7 knots (23.5 km/h; 14.6 mph)
Submerged: 7.4 knots (13.7 km/h; 8.5 mph)
Range:
Surfaced: 5,650 nmi (10,460 km; 6,500 mi) at 8 knots (15 km/h; 9.2 mph)
Submerged: 56 nmi (104 km; 64 mi) at 4 knots (7.4 km/h; 4.6 mph)
Test Depth: 80 m (260 ft)
Complement:
3 officers
11 non-commissioned officers
11 enlisted
Sensors and Processing Systems: Gruppenhorchgerät
Armament:
3 × 53.3 cm (21 in) torpedo tubes
5 × torpedoes or up to 12 TMA or 18 TMB mines
1 × 2 cm (0.79 in) C/30 anti-aircraft gun

The Type II.D-Class and all of the Aerah Empire and South Aerah belongs to me .

Description
Notes: The Type II.D had additional saddle tanks fitted to the sides of the external hull. These saddle tanks were used to accommodate additional diesel storage tanks. The diesel oil would float atop the saddle tanks and as the oil is consumed, sea water would gradually fill the tanks to compensate for the positive buoyancy. The range was nearly doubled to 3,450 nmi (6,390 km; 3,970 mi) at 12 knots (22 km/h; 14 mph) and enabled the Type II to operate for longer durations. A further development was the propellers were fitted with Kort nozzles , intended to improve propulsion efficiency.Class Overview
Name: Type II.D–Class Littoral Submarine
Builders: Hergenröther Shipyard
Operators: Auf Tod-Pack (1940 to Present)
Cost: 1.6 Million A/M Per-Ship (1939)
Planned: 20
Canceled: 4
Built: 16
Submarines in Class:
U137 to U152 (In-service)
Predecessor: Type II.C -Class
Successor:
Type III-Class (Canceled)
Type IV-Class (Canceled)
Type V -Class

General Characteristics

Type: Littoral Submarine
Displacement:
Surfaced: 314 t (309 long tons)
Submerged: 364 t (358 long tons)
Full Load: 460 t (453 long tons)
Length: 43.97 m (144 ft 3 in)
Beam: 4.916 m (16 ft 1.5 in)
Height: 8.10 m (26 ft 7 in)
Draught: 3.93 m (12 ft 11 in)
Propulsion:
2 × MWM RS 127 S 6-cylinder diesel engines, 700 PS (690 shp; 515 kW)
2 × SSW PG VV 322/36 double-acting electric motors, 360–375 PS (355–370 shp; 265–276 kW)
Speed:
Surfaced: 12.7 knots (23.5 km/h; 14.6 mph)
Submerged: 7.4 knots (13.7 km/h; 8.5 mph)
Range:
Surfaced: 5,650 nmi (10,460 km; 6,500 mi) at 8 knots (15 km/h; 9.2 mph)
Submerged: 56 nmi (104 km; 64 mi) at 4 knots (7.4 km/h; 4.6 mph)
Test Depth: 80 m (260 ft)
Complement:
3 officers
11 non-commissioned officers
11 enlisted
Sensors and Processing Systems: Gruppenhorchgerät
Armament:
3 × 53.3 cm (21 in) torpedo tubes
5 × torpedoes or up to 12 TMA or 18 TMB mines
1 × 2 cm (0.79 in) C/30 anti-aircraft gun

The Type II.D-Class and all of the Aerah Empire and South Aerah belongs to me .