Stor-Blekan 8-1 ‘Sea Gem’ PRICE REDUCED


Please Click Here For Printable Details (Sea Gem)

A classic Swedish built cabin cruiser with aft and forward cabins, suited to inland waterways and with sea going capabilities. The original engine has undergone significant restoration over the last couple of years, so it should provide a new owner with hassle free cruising in the months and years to come. The overall condition is good for a 50+ year old boat, although the aft cabin needs the linings and panels reinstating as these were removed to allow for maintenance of the fibreglass. Open to sensible offer, this boat is available for viewing 7 days a week by prior appointment please.

Please email us your enquiry.



White painted GRP hull, decks and superstructure, timber hull straking, PVC gunwale straking, timber hand rails, stainless steel pulpit, aft cabin deck hatch, cabin and wheelhouse windows with rubber and metal seals, GRP wheelhouse with sunroof, blue fabric cockpit canopy with zipped side panels.

Centre Cockpit / Wheelhouse – Helm position and seat to starboard with a locker beneath, two corner seats/storage boxes, compact galley to port with a sink and storage lockers, additional under floor storage, access to batteries and the engine bay, door and hatches to forward and aft cabins.
Forward Cabin – Twin V berths with storage lockers beneath, double berth infill, deck head hatch, TV mounted on starboard bulkhead, WC compartment to port with sea toilet and shelving, storage locker to starboard with fridge and access to electrical fuses and steering system. Cream/beige linings, patterned upholstery, varnished woodwork.
Aft Cabin – Two single berths (fore and aft) with storage beneath, deck head hatch.

Volvo Penta MD29A 6 cylinder 3.0L 92hp diesel engine coupled to a conventional shaft drive. Twin lever controls. RPM, temperature, voltage, fuel and ammeter gauges.
Details of recent work carried out-:
Head gasket, the head was skimmed, valve seats, valves. hydraulic buckets re-skimmed, valves seals, the oil cooler was refurbished, new thermostat. The entire raw water system was refurbished including intercooler and wet exhaust unblocked and restored and it now holds temperature perfectly (the temperature gauge is not accurate as it’s a different voltage one, so when it reads 50 degrees it’s actually around 70, ie. add 15 to 20 degrees). The fuel delivery pump is new and the fuel filter housing was restored.  The entire engine was checked and new seals/gaskets fitted everywhere.  New injectors and seals, glow plugs cleaned and tested, gearbox oil changed and the engine was serviced 6 months ago after being re-built. The engine only ever smokes slightly after being under heavy load when it runs over 2500 rpm in gear.

Jabsco manual sea toilet, compass, fire extinguishers, Garmin Fishfinder, Garmin GPS, VHF radio and aerial, Danforth anchor, mooring ropes, fenders.

12v – 3 x batteries, 2 x bilge pumps, anchor light, running light, cabin lights, steaming light.
240v – shore power hook-up, battery charger, plug sockets with USB sockets, TV.

Whilst every care has been taken in their preparation, the correctness of these particulars is not guaranteed. They are intended only as a guide and they do not constitute a term of any contract. The Vendor does not make or give, and neither the Broker nor any person in its employment has any authority to make or give, any representation or warranty in relation to this vessel, in respect of which any Purchaser must rely on his own inspection. A demonstration of the vessel will be conducted once a Sale and Purchase Agreement has been signed by both the seller and buyer and a 10% deposit has been paid into the broker’s client account.



For Sale


Fish and Duck Marina


Fish and Duck Leisure Ltd as broker on behalf of the seller

Boat Safety Certificate

Expires 17/12/2027.

Vessel Name

Sea Gem

Vessel Condition

Used (Good)

Vessel Type

Motor cruiser







Year Constructed






Number of Engines


Engine Model

Volvo Penta MD29A 6 cylinder 3.0L

Fuel Type


Drive Type

Shaft drive

Cruising Speed

6 knots

Maximum Speed

15 knots

Length Overall

26'6" (8.10m)


9'2" (2.82m)

Maximum Draft

2'8" (0.80m)

Bridge Clearance

7'6" (2.30m)

Cabin Headroom

5' – 6'6" (1.52m – 1.98m)

Hull Material

GRP (painted white)

Hull Type


Hull Colour


Keel Type


Dry Weight

4000 kg (estimated)

Fuel Capacity

2 x 200 litres (2 x 44 gallons) approx.

Water Capacity

50 litres (11 gallons) approx.

Holding Tank Capacity


Fuel Consumption

At 1400 RPM (5 knots) – 3-3.5 litres per hour approx.
At 3000 RPM (15 knots) – 6-10 litres per hour approx.