Thailand

Mitsubishi i Japan byggede 4 ubåde til den thailandske flåde mellem 1. og 2. verdenskrig.

Name	No	Builder	Laid down	Launched	Comp	Fate
Vilun	-	Mitsubishi, Kobe, Japan	4/1936	24/12/1936	9/1937	stricken 11/1951
Machanu	-	Mitsubishi, Kobe, Japan	4/1936	24/12/1936	9/1937	stricken 11/1951
Sinsamudar	-	Mitsubishi, Kobe, Japan	10/1936	14/5/1937	1938	stricken 11/1951
Blajunbol	-	Mitsubishi, Kobe, Japan	10/1936	14/5/1937	1938	stricken 11/1951

 

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 diesels / 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)
Complement 24
Diving depth operational, m

Ship project history: Small coastal submarines with strong torpedo armament, built in Japan under the 1935 program. 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 program included building of 4 additional boats of this class, however subsequently they were cancelled, and new submarines were never laid down.