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TM4 motor torpedo boats (1940-1942)


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TM5

Ships


Names Builders Commissioned Losses Transfers Discarding

TM4 - 21

Marine Etablissement Sourabaja, Surabaya: TM4 - 21

1940: TM4 - 8

1941: TM9 - 13

1942: TM14, 15

captured incomplete by Japan 3/1942: TM16 (No115), TM17 (No116), TM18 (No117), TM19 (No118), TM20 (No119), TM21 (No120)

TM4 (3/1942, later Japanese No102), TM5 (3/1942, later Japanese No112), TM6 (3/1942, later Japanese No103), TM7 (3/1942, later Japanese No113), TM8 (3/1942, later Japanese No104), TM9 (3/1942, later Japanese No105), TM10 (3/1942, later Japanese No106), TM11 (3/1942, later Japanese No107), TM12 (3/1942, later Japanese No108), TM13 (3/1942, later Japanese No109), TM14 (3/1942, later Japanese No110), TM15 (3/1942, later Japanese No111)

none

none



Technical data


Displacement standard, t

17.5

Displacement full, t 
Length, m

19.2

Breadth, m

4.30

Draught, m

1.40

No of shafts

3

Machinery

TM4 - 15: 3 Lorraine Dietrich petrol engines

TM16 - 21: 3 Carmouth petrol engines

Power, h. p.

TM4 - 15: 1350

TM16 - 21: 1425

Max speed, kts

36

Fuel, t

petrol

Endurance, nm(kts)

450(33)

Armament

TM4 - 11, 15 - 21: 1 x 2 - 7.7/94, 2 - 450 TT

TM12 - 14: 1 x 2 - 7.7/94, 2 DCR (8)

Complement

6



Graphics


<i>TM5</i>
TM5


Ship project history


Built in Surabaya under a little modernized design of TM3. On plan of Dutch Naval staff, they should become rather cheap and effective remedy of increasing of defensive potential of the Dutch East Indies. Steel hull with V-shaped contours. In view of backwardness of industrial base of colony, the armament and equipment of boats represented a set of "second-hand" had near at hand, and not always satisfactory quality. Aviation motors, removed from written off flying boats Dornier Wal and Fokker T.4, have been produced still in the late twenties - early 1930th. Because of strong deterioration their operation has been interfaced to serious difficulties. Together with motors, from the written off aircrafts boats received also gun armament: on one twin Lewis MG of rifle calibre in aviation-type ring mount on a bow. Torpedo launchers stood earlier on "Roofdier" type destroyers and Z class torpedo boats, and after their discarding were stored in Surabaya arsenal, and on all boats they have not sufficed, therefore TM12-14 instead of torpedoes carried depth charges.

Modernizations


None.

Naval service


All have been scuttled at Surabaja between March, 2nd and 8, 1942; subsequently they were repaired by Japanese (including incomplete boats) and commissioned by IJN as MTBs (Gyoreitei) Nos102, 112, 103, 113, 104-111 and 115-120.