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a year ago
Althorne marine recently installed a Beta engine in my boat and I found them to be approachable, conscientious and considerate. The price was very reasonable and the installation was executed to a high standard, as has been the case with all the work John and Steve have carried out for me over the years.
a year ago
John and Steve at Althorne Marine, have worked really hard to keep my old boat working, nothing deters, or is beyond them. Great commitment to detect and find issues, plus great experience, skill and ability enabling them to deal with anything,
- terence g
3 years ago
Steve serviced my engine a Mercury and checked everything, winterised it, perfect job and reasonable price and no mess would recommend and use again.
- Martin B

About us

We are a family run marine engineering company based in the very popular Bradwell Marina on the River Blackwater.

Our services include,
  • Inboard/Outdrive and Outboard servicing
  • Boat winterising
  • Most makes of engines and outboards supplied and fitted.
  • Bow and stern thruster installations
  • Electronics installations
  • Heating installations
  • Antifouling and anode replacement
  • Valeting, Polishing and GRP repairs
  • Boat management and handling tuition

We also have an on-site chandlery service.

Please come in and visit our shop

If you require Rigging services or sail/cover makers, we can put you in touch with the right people.

Contact Us


Call now
  • 07904 329236
  • 07939 100822


Get directions
Bradwell Marina
Waterside Road
United Kingdom

Business Hours

Mon:8:00 AM – 5:00 PM
Tue:8:00 AM – 5:00 PM
Wed:8:00 AM – 5:00 PM
Thu:8:00 AM – 5:00 PM
Fri:8:00 AM – 5:00 PM
Sat:8:00 AM – 12:00 PM
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