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Blajunbol 1938

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
วิรุณ [Vilun]			Mitsubishi, Kobe, Japan	4.1936	24.12.1936	9.1937	stricken 11.1951
มัจฉาณุ [Machanu]			Mitsubishi, Kobe, Japan	4.1936	24.12.1936	9.1937	stricken 11.1951
สินสมุทร [Sinsamudar]			Mitsubishi, Kobe, Japan	10.1936	14.5.1937	1938	stricken 11.1951
พลายชุมพล [Blajunbol]			Mitsubishi, Kobe, Japan	10.1936	14.5.1937	1938	stricken 11.1951

Technical data

Displacement standard, t
Displacement normal, t	370 / 430
Length, m	51.0
Breadth, m	4.11
Draught, m	3.65
No of shafts	2
Machinery	2 diesels / 2 electric motors
Power, h. p.	1000 / 540
Max speed, kts	14.5 / 8
Fuel, t	diesel oil 27
Endurance, nm(kts)	3000(10) /
Armament	1 x 1 - 76/40 11-shiki, 1 x 1 - 13.2/76, 5 - 533 TT (4 bow, 1 stern, 7)
Electronic equipment	presumably hydrophone
Complement	24
Diving depth operational, m

Standard scale images

Graphics

Project history

Small coastal submarines with strong torpedo armament, built in Japan under the 1935 programme. They were designed by Mitsubishi on the basis of Schneider-Laubeuf design. Vilun, Sinsamudar and Blajunbol in some sources are written as Wirun, Sinsamut and Plai Chumpol. The 1938 programme included building of 4 additional boats of this class, however subsequently they were cancelled, and new submarines were never laid down.

Modernizations

None.

Naval service

No significant events.