Marine Engines - Ailsa Craig to Brockhouse |
| Manufacturer | Model / hp | Spark Plug |
| Manufacturer | Model / hp | Spark Plug |
| Ailsa Craig | ---- | 15-A | Beaudoin | ---- | 8 Com |
| Albinco | A-4 A-6 O-2L S-4 U-1 | L-10 | Berg | HA KP LKP | L-10 |
| Albinco | 1948 onwards model O-I-L | L-10 | Berg | K, LS-10 | 16 |
| Albinco | A1-22 A1-23 E-4 E-6 T-4 | 7 | Berg | LH LK LK1 | LA-10 |
| Albinco | E-4 Sprutmotor | 7 | Berg | Cr, GTL, M | 7 |
| Albinco | O-1 O82 O-4 to 1948 | C-5 / 20 | Berg | LA LO-3 LO-3H LOL | J-12 |
| Albinco | O-1 O-2 O-4 (1948) 18mm fitting | 7 | Berg | LAL | J-8 |
| Albinco | O-11 O-21 O-41 18mm fitting | 7 | Berg | VL-3 VL-3F VL-FT | Y-6 |
| Albinco | O-I-L > 1947 O-4 Special > 1948 | 7 | Bernard | 18mm fitting | 7 Com |
| Albinco | O-6-B | 17 | Bernard | 14mm fitting | J-8 |
| Albinco | Other 18mm fitting | 8 Com | Bog-Marin | Model 16, 18mm fitting | 17 |
| Altos | ---- | 7 Com | Bog-Marin | Model 16, 14mm fitting | L-10 |
| Aquajet Minor | ---- | L-10 | Bog-Marin | 55, 7/8" SAE fitting | 0 Com |
| Archimedes | BS, BSO, BST, BS2, ABEA | 31 | Bog-Marin | Other 18mm fitting | 8 Com |
| Archimedes | A1 A2 A3 B1 BSL BSP | 17 | Bog-Marin | 26, 55, 14mm fitting | J-8 |
| Archimedes | BSMM B2 B3 B6 | 17 | Bog-Marin | 75-90, 6 Cyl, 100-130 | 0 Com |
| Archimedes | BSM BBS3 | C5 / 20 | Brit | 18mm fitting | 8 Com |
| Archimedes | B20, S, 20 | H-10 | Britannia | ---- | 17 |
| Archimedes | B22 B23 M1 S35 S50 S80 | L-10 | British Anzani | Unitwin 242cc & 322cc | L-11S |
| Aster | ---- | 8 Com | British Anzani | Unitwin Racing B Class | LA-11 |
| Atco | Boat Impeller | 17 | British Anzani | Super Single | 15-A |
| Atlantic | ---- | 8 Com | British Anzani | Pilot O/Board 60cc | L-10 |
| Austin | 18mm fitting | 8 Com | British Anzani | Minor 35cc | L-10 |
| Austin | 14mm to 1948 | L-10 | British Motor Boat | ---- | 17 |
| Austin | 14mm 1948 on | N-8B | British Seagull | All models 18mm fitting | 8 Com |
| Austin | Skipper, Chief | N-8B | Brockhouse Eng | All models | 17 |
