French Forces

Special Group 7
    Capt. Regis Berenger

Section 1
light cruiser Lamotte-Picquet        Capt. Berenger

Section 2:
sloops Amiral Charner                   Lt. Comm. Le Calvez
Dumont d’Urville                             Comm. de Quievrecourt

Section 3:
sloops Marne                                  Lt. Comm. Marc
Tahure                                              Lt. Comm. Mercadier

Thai Forces

Coast defense ships
Sri Ayuthia*                                        Comm. Luang Sangwon Yutthakit
Dhonburi*                                           Comm. Luang Prom Wiraphan;

Torpedo boats
Trad*
Chonburi*
Rayong
Songhkli*;

Sloops
Meklong
Tachin;

Minesweepers
Bangrachan
Nhongarhai;

Patrol boat
Thiew Uthock

Oiler
Sumui

Foong Khap Lai 72
12 Curtiss Hawk III fighters
 

*sunk or beached in this action

Sources:
1. Chronology of the War at Sea 1939-1945 by Rohwer & Hummelchen
2. Ko Chang 1941 by Jozef Dyskant