Trad 1950
Trad 1960
| 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 |
|
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 |
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.
Surasdra 1950
© Ivan Gogin, 2011-15