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Tyulen'

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Морж [Morzh]			Baltic Wks, Nikolayev	7.1911	28.9.1913	4.1915	lost 11-15.5.1917
Нерпа [Nerpa], 12.1922- Политрук [Politruk]	11		Baltic Wks, Nikolayev	7.1911	1.11.1913	3.1915	captured by Austria-Hungary 17.3.1918, to Whites 8.1919, re-captured 1.1920, commissioned by Red Fleet 6.1923, stricken 11.1930
Тюлень [Tyulen']			Baltic Wks, Nikolayev	7.1911	1.11.1913	3.1915	captured by Germany 1.5.1918, to Whites 12.1918, interned by France 12.1920

Technical data

Displacement standard, t
Displacement normal, t	Morzh, Tyulen': 630 / 790 Nerpa: 642 / 773
Length, m	Morzh, Tyulen': 68.4 Nerpa: 67.4
Breadth, m	Morzh, Tyulen': 4.48 Nerpa: 4.42
Draught, m	Morzh, Tyulen': 3.90 Nerpa: 3.96
No of shafts	2
Machinery	2 Nobel diesels / 2 electric motors
Power, h. p.	500 / 900
Max speed, kts	10.8 / 8
Fuel, t	diesel oil 54
Endurance, nm(kts)	2600(10) / 125(6)
Armament	Morzh, Nerpa: 1 x 1 - 57/40 Hotchkiss, 1 x 1 - 47/40 Hotchkiss, 12 - 450 TT (2 bow, 2 stern, 8 side drop-collars, 14) Tyulen': 1 x 1 - 75/48 Canet, 1 x 1 - 57/40 Hotchkiss, 12 - 450 TT (2 bow, 2 stern, 8 side drop-collars, 14)
Complement	47
Diving depth operational, m	45

Standard scale images

Graphics

Project history

Design of I. G. Bubnov. Single-hulled, without watertight bulkheads, development of Akula. Under original design it was supposed to equip them with 2 1140hp diesels, that should ensure 19kts surface speed. However it was necessary to install diesels removed from Amur flotilla gunboats.

Modernizations

1917, Tyulen': - 8 - 450 TC; + 1 x 1 - 37/20 Hotchkiss, 4 - 450 TT (ext)

1923, Politruk: - 1 x 1 - 57/40, 1 x 1 - 47/40, 8 - 450 TC; + 2 x 1 - 75/48 Canet

Naval service

Morzh was lost in Black Sea 11-15.5.1917 for unknown cause. Tyulen'  was withdrawn by Whites to Bizerte where she was broken up in mid-1930s. Nerpa entered service with Red Navy, but was stricken on technical condition.

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