SM UB-78

	File:UB 148 at sea 2.jpeg UB-148 at sea, a U-boat similar to UB-78.
History
File:War Ensign of Germany 1903-1918.svgGerman Empire
Name	UB-78
Ordered	23 September 1916
Builder	Blohm & Voss, Hamburg
Cost	3,338,000 German Papiermark
Yard number	307
Launched	2 June 1917
Commissioned	20 October 1917
Fate	Sunk on 19 April 1918
General characteristics
Class & type	Type UB III submarine
Displacement	516 t (508 long tons) surfaced; 648 t (638 long tons) submerged;
Length	55.30 m (181 ft 5 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.68 m (12 ft 1 in)
Propulsion	2 × propeller shaft; 2 × MAN four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW); 2 × Siemens-Schuckert electric motors, 780 shp (580 kW);
Speed	13.6 knots (25.2 km/h; 15.7 mph) surfaced; 7.8 knots (14.4 km/h; 9.0 mph) submerged;
Range	8,680 nmi (16,080 km; 9,990 mi) at 8 knots (15 km/h; 9.2 mph) surfaced; 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	50 m (160 ft)
Complement	3 officers, 31 men
Armament	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern); 10 torpedoes; 1 × 8.8 cm (3.46 in) deck gun;
Service record
Part of	V Flotilla; 2 January – 18 February 1918; Flandern I Flotilla; 18 February – 19 April 1918;
Commanders	Kptlt. Woldemar Petri; 20 October 1917 – 15 February 1918; Oblt.z.S. Ulrich Pilzecker; 16 February – 17 March 1918; Oblt.z.S. Arthur Stoßberg; 18 March – 19 April 1918;
Operations	5 patrols
Victories	1 merchant ship sunk ; (1,155 GRT); 1 auxiliary warship sunk ; (86 GRT); 2 merchant ships damaged ; (7,040 GRT);

SM UB-78 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 20 October 1917 as SM UB-78.^{[Note 1]} The submarine struck a naval mine off Dover and sank at position Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value). on 19 April 1918 all 35 crew lost.^[3]

Construction

She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 2 June 1917. UB-78 was commissioned later that same year under the command of Kptlt. Woldemar Petri. Like all Type UB III submarines, UB-78 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-78 would carry a crew of up to 3 officers and 31 men and had a cruising range of 8,680 nautical miles (16,080 km; 9,990 mi). UB-78 had a displacement of 516 t (508 long tons) while surfaced and 648 t (638 long tons) when submerged. Her engines enabled her to travel at 13.6 knots (25.2 km/h; 15.7 mph) when surfaced and 7.8 knots (14.4 km/h; 9.0 mph) when submerged.^[2]

Summary of raiding history

Date	Name	Nationality	Tonnage^{[Note 2]}	Fate^[7]
21 March 1918	Strathearn	File:Civil Ensign of the United Kingdom.svg United Kingdom	152	Damaged
22 March 1918	Polleon	File:Civil Ensign of the United Kingdom.svg United Kingdom	1,155	Sunk
25 March 1918	HMD Border Lads	File:Naval ensign of the United Kingdom.svg Royal Navy	86	Sunk
26 March 1918	British Star	File:Civil Ensign of the United Kingdom.svg United Kingdom	6,888	Damaged

References

Notes

^ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
^ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

^ Rössler 1979, p. 65.
^ ^a ^b ^c ^d Gröner 1991, pp. 25–30.
^ ^a ^b Helgason 2018
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Bibliography

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External links

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

[tonnage-8] Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

[FOOTNOTERössler197965-1] Rössler 1979, p. 65.

[FOOTNOTEGröner199125–30-2] Gröner 1991, pp. 25–30.

[Helgason_p.-3] Helgason 2018

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[1]

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[Note 1]

[Note 2]

[7]

v t e 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)
List of U-boats of Germany

v t e Shipwrecks and maritime incidents in April 1918
Shipwrecks	1 Apr: HMS Falcon 3 Apr: AG-11, AG-12, AG-16, HMS E1, HMS E9 4 Apr: HMS Bittern, HMS C26, HMS E8 5 Apr: HMS C27, HMS C35 7 Apr: Rye 8 Apr: HMS E19 10 Apr: Benedetto Cairoli, Faulx 11 Apr: USS Mary B. Garner, UB-33 17 Apr: UB-82 19 Apr: UB-78 21 Apr: UB-71 22 Apr: Prinz August Wilhelm, UB-55 23 Apr: HMS Brilliant, HMS C3, HMS Sirius, HMS Thetis 25 Apr: U-104 29 Apr: Priarial 30 Apr: UB-85
Other incidents	10 Apr: Mangini, Giacinto Carini 11 Apr: HMS King Alfred, SMS Rheinland 23 Apr: Brussels
1917 File:Arrow Blue Left 001.svg 1918 File:Arrow Blue Right 001.svg 1919 March 1918 File:Arrow Blue Left 001.svg File:Arrow Blue Right 001.svg May 1918

SM UB-78

Contents

Construction

Summary of raiding history

References

Notes

Citations

Bibliography

External links

Navigation menu

History

File:UB 148 at sea 2.jpeg UB-148 at sea, a U-boat similar to UB-78.




File:War Ensign of Germany 1903-1918.svgGerman Empire
Name	UB-78
Ordered	23 September 1916^[1]
Builder	Blohm & Voss, Hamburg
Cost	3,338,000 German Papiermark
Yard number	307
Launched	2 June 1917^[2]
Commissioned	20 October 1917^[2]
Fate	Sunk on 19 April 1918^[3]


General characteristics
Class & type	Type UB III submarine
Displacement	516 t (508 long tons) surfaced 648 t (638 long tons) submerged
Length	55.30 m (181 ft 5 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.68 m (12 ft 1 in)
Propulsion	2 × propeller shaft 2 × MAN four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW) 2 × Siemens-Schuckert electric motors, 780 shp (580 kW)
Speed	13.6 knots (25.2 km/h; 15.7 mph) surfaced 7.8 knots (14.4 km/h; 9.0 mph) submerged
Range	8,680 nmi (16,080 km; 9,990 mi) at 8 knots (15 km/h; 9.2 mph) surfaced 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	3 officers, 31 men^[2]
Armament	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) 10 torpedoes 1 × 8.8 cm (3.46 in) deck gun


Service record
Part of	V Flotilla 2 January – 18 February 1918 Flandern I Flotilla 18 February – 19 April 1918
Commanders	Kptlt. Woldemar Petri^[4] 20 October 1917 – 15 February 1918 Oblt.z.S. Ulrich Pilzecker^[5] 16 February – 17 March 1918 Oblt.z.S. Arthur Stoßberg^[6] 18 March – 19 April 1918
Operations	5 patrols
Victories	1 merchant ship sunk (1,155 GRT) 1 auxiliary warship sunk (86 GRT) 2 merchant ships damaged (7,040 GRT)

SM UB-78

Construction

Summary of raiding history

References

Notes

Citations

Bibliography

External links

Navigation menu

Search