Siam/Thailand
in
World War II

Bibliography
Conway's All the World's Fighting Ships 1922-1946
Thai Aviation Webpage
(http://www.thai-aviation.net)
Royal Thai Air Force Museum Website (Link)
Niehoster OBAT Site (Link)

Note: This page is based on information I put together to help me plan out a scenario for War in the Pacific - Admiral's Edition, that would have Thailand as a functional collection of forces in the game.

Note II: The country was known as Siam from the 1700s to 23 June 1939, when the official name of the country was changed to Thailand.

Royal Thai Army (as of 1940)

44 x Infantry Battalions (Khong Phan)
13 x Artillery Groups
9 x Cavalry Squadrons
6 x Engineering Battalions
3 x Tank Companies
1 x AA Regiment (equipped with 40mm Bofors)
3 x AA Companies (equipped with 75mm Bofors)

Armored Fighting Vehicle Inventory:

20 x Armstrong 6 ton Tanks
35 x Light Ford Tanks
4 x Landswerk Tanks
12 x Vickers Armored Cars

Royal Thai Air Force (December 1940)

Organization:

No. 73 Mixed Wing

Observation Squadron 32 (Ubon) 9 x V-93S
Bomber Squadron 50 (Ubon) 6 x Martin 139WS

No. 35 Mixed Wing

Observation Squadron 34 (Udorn) 9 x V-93S
Pursuit Squadron 50 (Nakhon Phanom) 9 x Hawk III

No. 66 Wing

Songkram Squadron 1 (Don Muang at Bangkok) 12 x Ki.30 “Ann”
Songkram Squadron 2 (Don Muang at Bangkok) 12 x Ki.30 “Ann”
Pursuit Squadron 60 (Don Muang at Bangkok) 11 x Hawk 75N

No. 74 Wing

Observation Squadron 44 (Chantaburi) 9 x V-93S
Pursuit Squadron 72 (Chantaburi) 9 x Hawk III
Pursuit Squadron 72 (Chantaburi) 9 x Hawk III
Observation Section (Chantaburi)

No. 74 Mixed Wing

Pursuit Squadron 73 (Sisaket), 9 x Hawk III
Pursuit Squadron 80 (Prachinburi), 9 x Hawk II
Attack Squadron 35 (Prachinburi) x 9 V-93S

Aircraft

Trainers

70~ x Avro 504N Trainers (20 delivered in 1930, 50+ built locally)

Fighters

12 x Curtiss Hawk II (all delivered in 1934)
74 x Curtiss Hawk III (24 delivered 1935. 25 built in 1937. 25 Built in 1939. Designated Fighter Type 10, or Type F-10)
12 x Curtiss Hawk 75N (all delivered in 1938; Designated Fighter Type 11, or Type F-11)

Bombers

6 x Martin 139WSM (all delivered in 1937)
9 x Mitsubishi Ki-21 “Sally” (Delivered December 1940, about a month into the Franco-Thai war)

Attack

87 x Vought V-93S Corsairs (12 bought on 30 March 1933 from Vought. 25 more built in 1936. 50 more built in 1940. Designated Observation and Attacker Type 1, or Type A-1)

Transports

13 x Fairchild F-24J (all delivered by 1940; some were with the state airline)

Royal Thai Air Force (Planned Re-Equippage)

Fighters

North American NA-68: Six were ordered in November 1939, with a plan to license produce them in Thailand to re-equip the RTAF and replace the Hawk IIIs and Hawk 75Ns. The six ordered NA-68s were seized by the USAAF after an embargo was placed on Thailand in October 1940 and designated P-64.

Attack

North American NA-69: Ten were ordered in November 1939, with a plan to license produce them in Thailand to re-equip the RTAF and replace the V-93S Corsairs. The ten ordered NA-69s were seized by the USAAF after an embargo was placed on Thailand in October 1940 and designated A-27.

Bombers

Bristol Blenheim IV: Six were ordered in 1939, but not delivered following the October 1940 embargo. Probably would have replaced the Martin 139s.

Royal Thai Air Force (Wartime Acquisitions)

Fighters

12 x Ki-27b ‘Nate’ (Delivered January 1942)
24 x Ki-43 Hayabusa ‘Oscar’ (Delivered 1943)

Bombers

3 x Martin 139s (ex-Dutch, acquired in 1943.)
6 x Martin 166s (ex-Dutch, acquired in 1943.)

Trainers

24 x Ki-36 “Ida” (All purchased in 1942. Designated Trainer Type 6.)

Royal Thai Naval Aviation (Pre-War)

6 x WS.103S Floatplanes (All Delivered May 1938. Four based at Sattahip Naval Base, and two on Corvettes)
1 x Avro 504N (Ex Thai Air Force, Delivered 1939.)
18 x E8N1 Type 95 “Dave” (Ordered 1938, delivered by late 1940)

Royal Thai Naval Aviation (Wartime Acquisitions)

6 x E13A-1 Type 0 “Jake” (3 delivered in 1942, 3 delivered in June 1944)

Royal Thai Navy

2 x Taksin Class Light Cruisers (5,550 t standard, 504 ft long, 30 kts, 6 x 6" guns, 6 x 3" guns, and 6 x TT)

Taksin
Naresuan

Notes: Were ordered in 1938 from Italy and laid down in 1939. Work on them slowed after the outbreak of the Second World War, and eventually, they were bought out by the Italians who re-ordered them to a substantially different design as the Etna class. They were not completed at all and the incomplete hulls were scrapped post-war.

2 x Sri Ayuthia Coastal Defense Ships (2,265 tons, 252 ft long, 15.5 kts, 4 x 8" guns and 4 x 3" guns)

Sri Ayuthia
Dhonburi

2 x Ratanakosindra Armored Gunboats (1,000 t full load, 160 ft long, 12 kts, 2 x 6" guns and 4 x 3" guns)

Ratanakosindra
Sukhothai

9 x Puket class Torpedo Boats (470 t full load, 219 ft long, 31 kts - 3 x 3" guns and 6 x 18" TT)

Chandraburi
Chonburi
Chunphorn
Patani
Puket
Rayong
Songkli
Surasdra
Trad

3 x Kantan Class Torpedo Boats (135 t full load, 131 ft long, 19 kts - 1 x 3" gun, and 2 x 18" TT)

Kantan
Kylongyai
Takbai

2 x Tachin Sloops (2,000 t full load, 269 ft long, 17 kts - 4 x 4.7" guns, and 4 x 18" TT)

Tachin
Meklong
UNNAMED - Projected but never built/ordered
UNNAMED - Projected but never built/ordered

2 x Bangrachan Class Minelayers (408t full load, 160 ft long, 13 kts - 2 x 3" Guns and 142 mines)

Bangrachan
Nhongarhai

4 x Sinsamudar class Submarines (430 t Submerged, 167 ft long, 14.5 kts surf - 4 bow, 1 stern TT)

Blajunbol
Machanau
Sinsamudar
Vilun

UNNAMED - Projected but never built/ordered
UNNAMED - Projected but never built/ordered
UNNAMED - Projected but never built/ordered
UNNAMED - Projected but never built/ordered

4 x CMBs (16 ton 55 foot MTBs by Thornycroft, capable of 40 kts, 2 x TT and 2 x DC)

CMB-6
CMB-7
CMB-8
CMB-9

4 x Sarasindhu Class Fishery Protection Ships (50 ton, 72 ft long, 9 kts with 1 x 37mm)

Sarasindhu
Thiew Uthock
Travane Vari

1 x Samet Class Unarmed Dispatch Vessel

Samet