Sea Otter Boats

Luxury Aluminium Narrowboats

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Sea Otter Boats

Sea Otter offer a selection of narrowboats ranging from 21 feet in length up to 56 feet.

All of the boats are made from the same marine grade aluminium alloy, offering it's owner strength and durability as well as minimal maintenance. For over a decade, Sea Otter narrowboats have represented the pinnacle of quality and luxury.

Check out the 21ft narrowboat article published in the Waterways World Magazine June 2006 issue. 'The go-anywhere narrowboat.'  (974 KB)
'Reproduced by kind permission of Waterways World magazine from their June 2006 issue'.

Exteriors And Performance

Sea Otter narrowboats are the Rolls-Royce of the inland waterways. Like all Sea Otter boats, our narrowbats are constructed from Marine grade BS5083 aluminium alloy. It is a material commonly used where strength and longevity are required. Aluminium alloy is a material favoured by the majority of small commercial craft builders. This includes RNLI lifeboats which prove their ruggedness on a daily basis. Buying a Sea Otter means that your never have the expensive burden of annual hauling out and re-blacking or changing anodes.

In choosing a Sea Otter, you will enjoy many benefits. You will experience a substantially lower cost of ownership and a massively reduced cost of maintenance. We believe that time should be spent enjoying life afloat rather than constantly performing maintenance on your boat.

A Sea Otter can be finished in any colour you wish and for that final personal touch we will add coach lines and sign writing. Any paintwork seen on a Sea Otter boat is purely cosmetic as the aluminium will not rust. The estimated life for the paintwork is 25 years, but even without it's paint you need not worry about the certainty of rust. Whatever colour you choose, the superb finish provided will be to the highest standards and look good for many years to come making you the envy of fellow non Sea Otter boat owners.

All Sea Otter narrowboats use a proven, reliable, and economical inboard marine diesel engine. The engines provide all the required power whilst also ensuring this is done with minimal engine noise.

"In eight seasons of Sea Otter cruising I have covered virtually the whole of the UK waterways system without major incident or breakdown."
J.Fowler, Sea Otter Owner

The Sea Otter's unique underwater design and water ballast system combine to deliver unrivalled handling characteristics, a tight turning circle and stability. Whether you are experienced or new to boat handling, you will find the responsive controls of your Sea Otter make boating relaxing and effortless.


Luxurious comfort, innovative design, quality, easy maintenance and durability are uppermost in our minds when we fit the interior of your Sea Otter. You have the option of choosing from a choice of tried and tested layouts included in the standard Sea Otter range or if you wish to personalise the interior, we are equally happy to accommodate your requirements to suit your own lifestyle.

Carpets, upholstery and curtains are included as standard with a choice from a selection of fabulous colours and designs. A wide range of factory fitted options and accessories allow you to make your Sea Otter as individual as you are.

All cabins are insulated for year round cruising comfort and hand finished in quality hardwood faced ply. Interior furnishings are handcrafted from the finest American white ash and finished with hardwood trims and capping.

Classic design and reflective surfaces with discreet lighting provide a clean and contemporary flavour, with streamlined and fully equipped galleys, incorporating comprehensive cooking and refrigeration facilities as standard. The one-piece granite effect worktop completes the galley area. A comprehensively fitted bathroom with full shower, hand basin and toilet complete the domestic facilities.

Trailable (21' - 31' Sea Otter Narrowboats)

Choosing a Sea Otter narrowboat in the range 21' to 31' will provide you with an almost infinite choice of cruising locations. This is one of the most significant benefits of owning a Sea Otter from the smaller range of narrowboats. The 27'- 31' Sea Otters can easily be transported by road using a suitable vehicle meaning you are no longer tied to the same stretch of canal. Gross trailer weights are 21' 2.45T and 27' 3.4T, the 31' is best trailed by our purpose built factory vehicles & Trailers.

Launching and recovering is a simple one-person job and because of the unique water ballast system your Sea Otter becomes 1.5 tonnes lighter out of the water. If you yearn for foreign waters or just want to move quickly to new cruising waters, you can either trail the boat yourself or contact the experienced Sea Otter team who will be more than happy to provide you with an economical boat moving solution.

Trailing Weight

The gross on the trailer 27' narrowboat is 3400 kilos. We recommend that you use the factory trailing service for 31' narrowboats and the 32' narrowboats. Current factory charges are £250 per day in addition to £1 per mile for the round trip and also in addition to VAT at the current rate of 20%.

Technical Specifications

Boat Size 21' 27' 31' 41' 51' 56'
Beam 6' 10" 6' 10" 6' 10" 6' 10" 6' 10" 6' 10"
Draft 19" 19" 19" 22" 24" 24"
Air Draft 6' 6' 6' 6' 6' 6'
Displacement 2.5T 4T 4.5T 8T 13.5T 14T


If you wish to order a brochure via post then please contact us.

Virtual Tours

View our factory & inside our boats with 360° virtual tours.