Designed by the renowned naval architect Alan Buchanan, the Neptunian 33 centre cockpit ketch was the final iteration of the Neptune class of sailing yacht.

Moulded by Tyler and co. and fitted out by J.W. Shuttlewood & Son Ltd to Lloyds 100A1 Sheolin is a very substantially built yacht well suited for Northern waters such as the West of Scotland.

Despite being touted by many as a motor-sailer the Neptunian 33 sails remarkably well. Okay, she might not point as high as some, but given the right conditions she will romp along at over 7 knots while the solid semi-enclosed wheelhouse keeps the crew sheltered from the elements. Under her current ownership she has cruised up and down the west coast of Scotland and the Irish Sea reaching as far as the Outer Hebrides and the Isle of Man.

Offers on the asking price will be considered.

Construction:
LOA: Nominally 33' (9.98m)
LWL: 26' (7.92m)
Beam: 10' (3.08m)
Draft: 4' (1.22m)
Displacement: 6.1 tons (6,198 kg) of which
Ballast: Fully encapsulated 2.7 tons (2,7143 kg)

Hull is off-white GRP with moulded cove line. Deck is double skin GRP with foam core. A sister main beam has been fitted at some time in the past to provide additional mast support.
Rudder is keel mounted solid GRP with bronze bottom bearing and stainless shaft through the hull to the steering quadrant.
Long fully encapsulated keel means she dries out level against a harbour wall.
Wheel steering (Whitlock rod steering)

Fore Cabin:
Two 6'4" berths, with lee cloths. Open fronted stowage to the sides and lockers below.
There is a fore hatch and access to the chain locker.

Heads
Located to port with Jabsco toilet, a pull-out sink, hot and cold pressurised water and a cupboard above.
Opposite the heads, to starboard, there is a large hanging locker with shelf above. This locker contains the fridge compressor and the heat that gives off helps dry damp clothes, towels etc.

Main saloon
Linear galley to starboard with a stainless sink and drainer, a 2-burner cooker with grill and oven (2024), and a top-entry fridge (converted from coolbox 2025).
Two sliding doors behind the galley provide ample storage for everything the chef needs.
There is a dedicated rack for plates, bowls and mugs.
A locker below the sink houses all the pots and pans.
There is a total of six drawers for cutlery, kitchen utensils, etc.

To port there is a teak table which can seat six. The table has two drawers; a large one for charts and a small one for small, ready use items. Fiddle rails can be slotted in when things get a bit rough.
The table can be lowered to convert the saloon seating into a comfortable double berth.
The aft berth in the saloon has all the electronics underneath while the forward berth is general storage.

There is plenty space for pilot books, manuals, games and bottles in the rack above the aft berth and in the shelves and lockers to the side.

Aft Cabin
Two 6'4" berths with lee cloths, stowage to the side, at the foot and underneath.
There is a large locker aft, between the bunks, handy for larger items.
The aft heads are to port with Jabsco toilet (2022) and pull out sink with hot and cold water.
There is a hanging locker opposite the heads.

Cockpit:
Deep and safe, making Sheolin an ideal yacht for a family with young children.
The port cockpit seat locker hosts the Planar (Autoterm) 2kw diesel heater which is ducted to all cabins (2022).
The starboard seat cockpit locker contains the manual bilge pump and holds 5 fenders and mooring warps.
Two larger fenders are lashed to the pushpit rail.
Gas locker to starboard with two 4.5 kg Calor cylinders.
Locker to port contains the 240 Vac consumer unit, mains cable and has room for buckets, spades and crabbing nets.

Machinery:
Yanmar 4JH3E installed @ 2002 with around 1000 hours. This engine is rated for 50hp @ 3,650 rpm and is a serious upgrade from the 37hp Perkins it replaced.
The engine, gearbox and propeller are well matched as the engine can reach 3,650 rpm at WOT.
At 2,200 rpm Sheolin will cruise all day at 6kts consuming ~2.5 ltrs/hour.
Single lever Morse control.
Aqua drive flexible coupling/thrust bearing.
Fixed 3-blade bronze propeller.
Conventional stuffing box stern gland. Repacked 2026.
Spur type rope cutter.
Wet exhaust with high temperature alarm.
Vetus waterlock was replaced in 2026.
Hull anode replaced 2026.

Fuel:
Two 50 gallon (2 x 225 litre) diesel tanks moulded into the hull either side of the engine bay. The engine draws and returns fuel from/to the starboard tank. A balance line between port and starboard tanks keeps the levels equal. With one hundred gallons of fuel this gives Sheolin a range under motor unmatched by most yachts of this size today.

Water:
100 gallon (450 litre) potable water tank is moulded into the hull above the keel.
Approx 25 litre calorifier, plumbed into the engine cooling water circuit, supplies the hot water.
A 1 kw immersion element is fitted for when mains power is available.
Hot and cold taps are fitted in the galley, forward heads and aft cabin heads.
Manual whale pump and in-line filter fitted in the galley.

Electrics:
240V socket on the port side of the wheelhouse feeds a small consumer unit in a port side cockpit locker.
240V is distributed to sockets in the main and aft cabins.
A galvanic isolator is fitted.
1500W inverter provides 240V to one dedicated socket in the saloon.

Batteries:
1 x Engine battery. 100 Ah Enhanced Sealed Lead Acid. 2022
2 x Domestic batteries, both 100Ah Enhanced Sealed Lead Acid. 2022.
Both engine and domestic batteries have their own dedicated isolators in the saloon.
An emergency parallel switch is located in the engine bay.
NOTE: Diesel heater is wired directly to domestic batteries, fused of course, to ensure it cannot be accidently isolated and not go through its shutdown procedure.
15A smart mains charger is fitted which charges both engine and domestic batteries via Sterling Pro-split-R zero volt drop split charger (2026)
Blue Sea 24 Vdc distribution panels incorporating circuit breakers.
24Vdc sockets in the main cabin and wheelhouse. There are also usb chargers fitted in wheelhouse and aft cabin.
A 100W solar panel on the wheelhouse roof charges both engine and domestic batteries through an MPPT controller and Sterling Pro-split-R zero volt drop split charger (2026).
All navigation and domestic lighting is by LED.

Instruments:
Stowe Navigator 2 log.
Stowe wind speed and direction.
Navtex depth sounder. (2024)
Compass.
Raymarine Autohelm 3000 with optional windvane (rare).
DSC VHF radio. Antenna mounted on main mast
Em-Trak AIS. Antenna mounted on mizzen mast.
Battery condition monitor.

Anchors and deck gear:
Main anchor is a 30lb Griff, a CQR lookalike, on 50m of 3/8" chain.
Chain hook and anchor pennant.
Secondary anchor is an Aluminium Fortress with approx 10m chain and >50m 3-strand nylon warp.
Twin bow rollers with bronze rollers.
Substantial galvanised samson post.
Sensible sized cleats at the bow, midships and aft for warps and springs.
The 1000 W Lofrans Cayman windless can be operated manually, by a handheld trigger plugged into a socket on the foredeck or by wireless remote control.
Stainless davits on the transom can be easily removed if you need to reduce your LOA in some marinas.
2.3m Waveline dinghy, although scruffy, is included in sale.
Stainless guard wires all round with pelican clip gates to port, starboard and across the transom.

Sails:
Genoa: Dacron, ~130%. (Roller reefing new 2023)
Mainsail: Dacron, full length battens with slab reefing ( 3 reefs) and stack-pack system.
Mizzen: Dacron, one full length batten. No reefs.
Removable Dyneema inner stay.
Hank-on Storm jib.
Hank on #3 blade jib.
A fully servicable spare suit of sails is included.

Sail Handling:
Single speed winch on starboard side of mast for the halyard.
2-speed winch on port side of the mast for reefing.
2-speed Lewmar 40 sheet winches on port and starboard cockpit sides.
Boom is on a powerful downhaul for tensioning the luff of the mainsail.
Three clutches on the boom for outhaul and two reefs. Conventional multi-purchase kicker.

Safety:
Jackstays fitted along port and starboard sidedecks (due for replacement!).
Lifebuoy with automatic light clipped to pushpit.
MOB recovery sling clipped to pushpit.
MOB throwing quoit.
Multi-purchase recovery hoist for getting MOB on board. Can be clipped to main boom or mizzen boom.
Stern ladder hinges down well below the waterline for easy boarding.
Strong points in cockpit for attaching safety lines.
Emergency steering shaft and tiller.
High capacity 12V bilge pump with auto/manual switch.
Manual bilge pump.
Anchor ball.
Motoring cone.
Toughened glass in wheelhouse and cabins.
3 x Dry powder fire extinguishers.
2 x Water Mist fire extinguishers (2024)
Carbon Monoxide detectors in main saloon and aft cabin.
4-person liferaft on aft deck is NOT included in sale and will be removed unless specifically requested it stays. Long out of date it has been self-serviced annually since 2021.

Summary:
Fitted with a modern, reliable Yanmar diesel engine this Neptunian 33 Ketch offers a sturdy build and excellent layout for liveaboard, coastal or blue-water cruising.
With a hundred gallons of diesel and water, plus a fridge to keep the beer cool and the meat fresh, you can cruise for extended periods without having to top-up the tanks or go shopping.