SM UB-77

{{Infobox ship image

|Ship image=NH 111083 German Submarine UB-77.jpg

|Ship caption=SM UB-77 in Wilhelmshaven

}}

{{Infobox ship career

|Ship country=German Empire

|Ship flag={{Shipboxflag|German Empire|naval}}

|Ship name=UB-77

|Ship ordered=23 September 1916{{sfn|Rössler|1979|p=65}}

|Ship builder=Blohm & Voss, Hamburg

|Ship original cost=3,338,000 German Papiermark

|Ship yard number=306

|Ship laid down=

|Ship launched=5 May 1917{{sfn|Gröner|1991|pp=25-30}}

|Ship completed=

|Ship commissioned=2 October 1917{{sfn|Gröner|1991|pp=25-30}}

|Ship fate=Surrendered 16 January 1919.{{sfn|Gröner|1991|pp=25-30}}

}}

{{Infobox ship characteristics

|Hide header=

|Header caption={{sfn|Gröner|1991|pp=25-30}}

|Ship class=Type UB III submarine

|Ship displacement=*{{convert|516|t|LT|lk=on|abbr=on}} surfaced

• {{convert|648|t|LT|abbr=on}} submerged

|Ship length= {{convert|55.30|m|ftin|abbr=on}} (o/a)

|Ship beam={{convert|5.80|m|ft|0|abbr=on}}

|Ship draught={{convert|3.68|m|ftin|abbr=on}}

|Ship propulsion=*2 × propeller shaft

• 2 × MAN four-stroke 6-cylinder diesel engines, {{convert|809|kW|bhp|abbr=on|order=flip|lk=in}}
• 2 × Siemens-Schuckert electric motors, {{convert|580|kW|shp|order=flip|abbr=on|lk=in}}

|Ship speed=*{{convert|13.6|kn|lk=in}} surfaced

• {{convert|7.8|kn}} submerged

|Ship range=*{{convert|8680|nmi|abbr=on}} at {{convert|8|kn}} surfaced

• {{convert|55|nmi|abbr=on}} at {{convert|4|kn}} submerged

|Ship test depth={{convert|50|m|ft|abbr=on}}

|Ship complement=3 officers, 31 men{{sfn|Gröner|1991|pp=25-30}}

|Ship armament=*5 × {{convert|50|cm|in|1|abbr=on}} torpedo tubes (4 bow, 1 stern)

• 10 torpedoes
• 1 × 8.8 cm SK L/30 naval gun

|Ship notes=

}}

{{Infobox service record

|is_ship=yes

|is_multi=yes

|partof=*V Flotilla

• 30 November 1917 – 17 April 1918
• I Flotilla
• 17 April – 11 November 1918

|commanders=*Kptlt. Wilhelm Meyer{{cite Uboat.net

|id=205

|name=Wilhelm Meyer

|type=1comm

|accessdate=4 February 2015

}}

• 2 October 1917 – 14 June 1918
• Oblt.z.S. Franz Maurer{{cite Uboat.net

|id=196

|name=Franz Maurer

|type=1comm

|accessdate=4 February 2015

}}

• 15 June – 11 November 1918

|operations=7 patrols

|victories=

• 1 merchant ship sunk
  ({{GRT|14,348}})
• 2 merchant ships damaged
  ({{GRT|28,174}})

}}