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FIGHTING SHIPS OF THE WORLD
SIAM / THAILAND
TORPEDO SHIPS
TRAD torpedo boats (1936-1938)


Photo



Surasdra 1950

Ships


Name No Yard No Builder Laid down Launched Comp Fate
ตราด [Trad] 11   CRDA, Monfalcone, Italy 2/1934 29/9/1935 3/1936 stricken 11/1975
ภูเก็ต [Puket] 12   CRDA, Monfalcone, Italy 1/1934 26/10/1935 3/1936 stricken 11/1975
ปัตตานี [Patani] 13   CRDA, Monfalcone, Italy 3/1935 28/11/1936 10/1938 stricken 11/1975
สุราษฎร์ [Surasdra] 21   CRDA, Monfalcone, Italy 3/1935 14/11/1936 10/1938 stricken 11/1977
จันทบุรี [Chanrdaburi] 22   CRDA, Monfalcone, Italy 6/1936 26/11/1936 10/1938 stricken 12/1976
ระยอง [Rayong] 23   CRDA, Monfalcone, Italy 6/1936 16/12/1936 10/1938 stricken 12/1976
ชุมพร [Chunphorn] 31   CRDA, Monfalcone, Italy 7/1936 12/1/1937 10/1938 stricken 11/1975
ชลบุรี [Chonburi] 32   CRDA, Monfalcone, Italy 8/1936 18/1/1937 10/1938 sunk 17/1/1941
สงขลา [Songhkla] 33   CRDA, Monfalcone, Italy 8/1936 10/2/1937 10/1938 sunk 17/1/1941


Technical data


Displacement standard, t

318

Displacement full, t

470

Length, m

66.8 pp 68.0 oa

Breadth, m

6.40

Draught, m

2.13

No of shafts

2

Machinery

2 sets Parsons geared steam turbines, 2 Yarrow boilers

Power, h. p.

9000

Max speed, kts

31

Fuel, t

oil 102

Endurance, nm(kts)1700(15)
Armament

3 x 1 - 76/40 12pdr 12cwt QF Mk I/II/V, 2 x 1 - 20/65 Breda 1939, 4 x 1 - 8/80, 2 x 2 - 450 TT, 2 x 1 - 450 TT

Complement

70



Standard scale images


<i>Trad </i>1960
Trad 1960
<i>Trad</i> 1950
Trad 1950


Graphics


<i>Surasdra</i> 1950
Surasdra 1950


Ship project history


Successful enough small fast ships for actions in constrained harbour areas. Two first torpedo boats (Trad and Phuket) were ordered to CRDA in 1934, remaining 7 ships under the 1935 programme. They were designed on basis of Italian Spica class torpedo boat, being as though their moderated version. 76mm artillery was delivered by Vickers-Armstrong for unification of an ammunition with already commissioned ships. On an TTs arrangement ships reminded German WWI-era torpedo boats: 2 twin banks were installed on centre line and 2 single TTs were installed aside behind a forecastle break. As well as the majority of Italian-built ships, on trials they exceeded designed speed: in particular, Phuket shown 32.34kts at 10000hp.

Modernizations


1960s, Trad, Puket, Chunphorn: - 1 x 1 - 76/40, 4 x 1 - 8/80, 1 x 2 - 450 TT, 2 x 1 - 450 TT; + 2 x 1 - 40/60 Mk 3, presumably radar

1960s, Patani, Surasdra, Chandraburi, Rayong: - 1 x 1 - 76/40, 4 x 1 - 8/80, 2 x 1 - 450 TT; + 1 x 1 - 40/60 Mk 3, presumably radar

Naval service


Chonbury and Songkhla were sunk 17/1/1941 in battle at Ko-Chang by gunfire of French cruiser Lamotte-Picquett and avisos Amiral Charner, Dumont D`Urville, Tahure, Marne. Contrary to judgement spread in literature, Trad did not participate in battle and was not been lost.