- Region
- Vietnam — Southeast Asia
- Sector
- Commercial fishing
- Customer
- Owner-operator of a 24 m steel offshore trawler
Overview
A trawler owner needed to replace a worn, high-fuel-consumption main engine before the next fishing season. The vessel had a conventional single-shaft layout and a fixed-pitch propeller, so the replacement package had to match the existing shaft line and engine bed with minimal structural work.
Challenge
The old engine was out of production and spare parts were becoming difficult to source. The owner wanted a modern water-cooled engine with a heat-exchanger cooling system, a matching reduction gearbox with the correct ratio for the existing propeller, and delivery within the six-week dry-dock window.
Solution
| Item | Model | Qty |
|---|---|---|
| Marine diesel engine | SDEC D683, 320 HP @ 2200 rpm, inline 6-cylinder, heat-exchanger cooled | 1 |
| Marine reduction gearbox | Advance 135A, ratio 4:1 | 1 |
| Propulsion accessories | Flexible coupling, engine mounts, wet exhaust elbow, instrument panel, wiring harness | 1 set |
| Spare parts kit | Filters, belts, impellers, gaskets for 2,000 hours | 1 set |
The engine and gearbox were matched at our workshop for flange alignment and shaft speed, then run-tested together before packing.
Scope of supply
Engineering selection, factory test with report and video, export wooden-box packing, FOB Shanghai, installation drawings, and remote commissioning support by video call.
Outcome
The package was installed within the dry-dock window. The owner reported lower fuel consumption at cruising speed and a full season without unplanned stops. A second vessel in the same family fleet has since been quoted with the same package.
Customer names are withheld; the case describes a typical supply scope built from products in the MARS catalogue.
