SM UB-128

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For other ships of the same name, see German submarine U-128.

Career (German Empire)
UB-148 at sea, a U-boat similar to UB-128.
Name:	UB-128
Ordered:	6/8 February 1917^[1]
Builder:	AG Weser, Bremen^[2]
Cost:	3,654,000 German Papiermark^[2]
Yard number:	301^[2]
Launched:	10 April 1918^[3]
Commissioned:	11 May 1918^[3]
Fate:	Surrendered 3 February 1919.^[3]
General characteristics
Class & type:	German Type UB III submarine
Type:	Coastal submarine
Displacement:	512 t (504 long tons; 564 short tons) surfaced 643 t (633 long tons; 709 short tons) submerged^[2]
Length:	55.85 m (183.2 ft) o/a^[2]
Beam:	5.8 m (19 ft)^[2]
Draught:	3.72 m (12.2 ft)^[2]
Propulsion:	2 shafts 6-cylinder Benz diesel engines,^[4] 1,060 ihp (790 kW) Schiffsunion^[4] electric motors, 788 ihp (588 kW)^[2]
Speed:	13.9 knots (25.7 km/h; 16.0 mph) surfaced 7.6 knots (14.1 km/h; 8.7 mph) submerged^[2]
Range:	7,280 nmi (13,480 km; 8,380 mi) at 6 kn (11 km/h; 6.9 mph) surfaced 55 nmi (102 km; 63 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged^[2]
Test depth:	50 m (160 ft)^[4]
Complement:	3 officers, 31 men^[4]
Armament:	• 5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) with 10 torpedoes • 1 × 10.5 cm (4.13 in) deck gun^[4]

Service record
Part of:	German Imperial Navy^[2]
Commanders:

SM UB-128 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 11 May 1918 as SM UB-128.^{[nb 1]}

UB-128 was surrendered on 3 February 1919 in accordance with the requirements of the Armistice with Germany and broken up in Falmouth in 1921.^[3]

Construction

Main article: German Type UB III submarine

She was built by AG Weser of Bremen^[2] and following just under a year of construction, launched at Bremen on 10 April 1918. UB-128 was commissioned later the same year . Like all Type UB III submarines, UB-128 carried 10 torpedoes and was armed with a 10.5 cm (4.13 in) deck gun. UB-128 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,280 nautical miles (13,480 km).^[2] UB-128 had a displacement of 512 t (504 long tons; 564 short tons) while surfaced and 643 t (633 long tons; 709 short tons) when submerged. Her engines enabled her to travel at 13.9 knots (25.7 km/h; 16.0 mph) when surfaced and 7.6 knots (14.1 km/h; 8.7 mph) when submerged.^[2]

Notes

Footnotes

↑ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.

Citations

↑ Rössler 1979, p. 55.
↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 Gröner 1985, p. 52.
↑ 3.0 3.1 3.2 3.3 Gröner 1985, p. 55.
↑ 4.0 4.1 4.2 4.3 4.4 Gröner 1985, p. 53.

References

Gröner, Erich (1985). "U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher". Die deutschen Kriegsschiffe, 1815-1945 III (Koblenz: Bernhard&Graefe). ISBN 3-7637-4802-4.
Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal. Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7.
Rössler, Eberhard (1979). "U-Bootbau bis Ende des 1. Weltkrieges, Konstruktionen für das Ausland und die Jahre 1935 - 1945". Die deutschen U-Boote und ihre Werften I (Munich: Bernhard&Graefe). ISBN 3-7637-5213-7.

v t e German Type UB III submarines

SM UB-48 SM UB-49 SM UB-50 SM UB-51 SM UB-52 SM UB-53 SM UB-54 SM UB-55 SM UB-56 SM UB-57 SM UB-58 SM UB-59 SM UB-60 SM UB-61 SM UB-62 SM UB-63 SM UB-64 SM UB-65 SM UB-66 SM UB-67 SM UB-68 SM UB-69 SM UB-70 SM UB-71 SM UB-72 SM UB-73 SM UB-74 SM UB-75 SM UB-76 SM UB-77 SM UB-78 SM UB-79 SM UB-80 SM UB-81 SM UB-82 SM UB-83 SM UB-84 SM UB-85 SM UB-86 SM UB-87 SM UB-88 SM UB-89 SM UB-90 SM UB-91 SM UB-92 SM UB-93 SM UB-94 SM UB-95 SM UB-96 SM UB-97 SM UB-98 SM UB-99 SM UB-100 SM UB-101 SM UB-102 SM UB-103 SM UB-104 SM UB-105 SM UB-106 SM UB-107 SM UB-108 SM UB-109 SM UB-110 SM UB-111 SM UB-112 SM UB-113 SM UB-114 SM UB-115 SM UB-116 SM UB-117 SM UB-118 SM UB-119 SM UB-120 SM UB-121 SM UB-122 SM UB-123 SM UB-124 SM UB-125 SM UB-126 SM UB-127 SM UB-128 SM UB-129 SM UB-130 SM UB-131 SM UB-132 SM UB-133 SM UB-136 SM UB-142 SM UB-143 SM UB-144 SM UB-145 SM UB-148 SM UB-149 SM UB-150 SM UB-154 SM UB-155

Preceded by: Type UB II Followed by: Type VII (World War II)

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