Chemainus pilot boat
- Model
- Twin AJ 285
- Length
- 12.0 m
- Speed
- 36 kn
- Engine
- FPT 420 hp × 2
AJ series | Combi-Frame
Alamarin-Jet AJ 285
A Combi-Frame model for long-tail or short-tail installation; suited to workboats, pilot boats, fast craft and USVs.
368 kWMax. input power (approx. 500 hp)
3,700 rpmMax. impeller shaft speed
181 kgDry weight
288 mmMax. impeller diameter
Features
Features
Patented Combi-Frame
Two hull inserts allow long-tail or short-tail installation for more flexible stern layouts.
Integrated steering cylinder
The steering hydraulic cylinder is integrated into the unit and works with a universal hydraulic system.
Conical impeller housing
The impeller can be moved fore and aft to adjust the tip clearance to the housing wall; after wear in sandy or silty water, the clearance can be readjusted to maintain performance (according to the manufacturer).
Bearings and cooling
Grease-lubricated main bearing; rear bearing with water or grease lubrication (optional); integrated oil cooler.
Applications: Workboats, military vessels, leisure boats (manufacturer's model page); pilot boats, fast craft, USVs (manufacturer's case studies)
Specifications
Full specifications
| Max. input power | 368 kW (500 hp per the manufacturer) |
|---|---|
| Max. impeller diameter | 288 mm |
| Max. impeller shaft speed | 3,700 rpm |
| Dry weight | 181 kg |
| Pump type | Mixed flow |
| Material | Aluminium / stainless steel |
| Reversing bucket actuation | Hydraulic |
| Compatible control systems | ACU, Sigma |
| About the control systems | See Sigma, ACU and Delta DP |
Installation dimensions (mm)
| Dimension | Long tail | Short tail |
|---|---|---|
| A | 503 | 504 |
| B | 1,637 | 1,637 |
| C | 698 | 698 |
| D | 454 | 454 |
| E | 327 | 725 |
Dimension codes refer to the manufacturer's outline drawing; the full 2D drawing is available by email on request.
References
References
Vampire rapid deployment transport craft
- Model
- Twin AJ 285, long tail
- Length
- 12.0 m
- Speed
- 40+ kn
- Engine
- Yanmar 370 hp × 2
SAY 45 tender
- Model
- Twin AJ 285
- Length
- 13.7 m
- Speed
- 47.5 kn
- Engine
- Yanmar 440 hp × 2
Zelim Guardian unmanned recovery vessel
- Model
- AJ 285
- Length
- 8.4 m
- Speed
- Top speed 30+ kn
- Engine
- BUKH 400 hp
Two brands represented by Hallmark Marine, working together on one vessel
Downloads
Downloads & enquiries
Alamarin-Jet 2026 Product Range (Chinese edition)
A Chinese edition is planned.
AJ 285 2D outline drawing
Available by email on request.
After-sales in Taiwan | Hallmark Marine Co., Ltd. (authorized Alamarin-Jet distributor in Taiwan)
Equipment selection, installation guidance and sea trials, scheduled maintenance and repair, and genuine parts. For parts enquiries, please provide the brand, model, waterjet serial number and vessel name. Warranty follows the manufacturer's terms and is decided case by case.
Equipment selection, installation guidance and sea trials, scheduled maintenance and repair, and genuine parts. For parts enquiries, please provide the brand, model, waterjet serial number and vessel name. Warranty follows the manufacturer's terms and is decided case by case.