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Nigel Irens 31 ft LDL Motor Launch 2017 - Sold



Nigel Irens 31 ft LDL Motor Launch 2017

Designer Nigel Irens
Builder Nigel Irens
Date 2017
Length overall 31 ft 2 in / 9.5 m
Length deck 31 ft 2 in / 9.5 m
Length waterline 30 ft 9 in / 9.38 m
Beam 8 ft 4 in / 2.55 m
Draft 1 ft 8 in / 0.5 m
Displacement 1.8 Tonnes
Construction Yellow cedar epoxy strip-plank
Engine 25 hp 3 Cyl 25 hp Beta (2017)
Location United Kingdom
Price Sold

These details are provisional and may be amended




WILHELMINA was conceived as a test vessel to further Nigel Irens's ongoing development of the 'LDL' (Low Displacement / Length ratio) hull form, based on the simple premise: "how much power do you really need?"... The timber-built WILHELMINA has demonstrated LDL's advantages by undertaking a number of long-range passages. A recently completed 94 nautical mile passage from Cowes, Isle of Wight, to Dartmouth, Devon, was accomplished at an average speed of 11 knots (benefitting from an average one knot fair tide). Fuel burned amounted to only 37 Litres - so 0.4 Litres per mile. WILHELMINA is eminently suitable for re-powering with a battery-powered electric motor. Apart from these remarkable numbers, WILHELMINA of course displays Nigel Irens's instantly recognisable styling to make the whole a most attractive, unique, and low carbon footprint offering. She has proven a much loved family day and weekend cruiser, exploring the coast and coves of Devon, and would be equally at home as a super efficient and striking superyacht tender.


LDL (Low Displacement / Length ratio)

The technology aims to explore the range of motor vessel speeds that are optimised to lie between that of a displacement hull and a fully planing hull. The objective of this initiative is to produce a vessel that offers:
- Substantially reduced fuel consumption
- A vastly increased range
- A reduction in noise and vibration
- A smooth curve of power/speed - virtually no 'hump' speed
- So, the ability to travel at any chosen speed always well under control



- 14 mm Alaska Yellow cedar strip-plank
- Sheathed outside with 600 gm/sq.m GRP
- Frames/ bulkheads: water-jet cut 9mm BS 1088 marine plywood
- Deck: 4 mm BS 1088 marine plywood substrate
- Sheathed 10 mm x 100 gms/m2 + 600 gm/m2 GRP
- Cockpit sole: 4 mm quarter-sawn Douglas fir
- Benches: Inboard edges trimmed with teak



- Grey painted hull, margin boards and full length toerail
- Grey painted rubbing strake
- Smoked plexiglass custom saloon hull lights port and starboard
- Cream painted deck
- All bronze deck fittings

From aft
- Transom hung rudder with skeg and prop-protecting endplate
- Bronze mooring fairleads and cleats port and starboard
- Bronze ensign staff socket
- Bronze fender attachments in narrow side decks

- Large, deep cockpit
- Quarter-sawn Douglas fir sole
- U-shaped seating port, starboard and aft for up to 12
- Teak inboard edges
- Stowage under
- Carbon fibre reinforced timber beaching legs at quarters
- White painted slatted hull sides
- Comfortably angled coaming as back rest
- Semi bulkheads fwd port and starboard
- Aft semi-bulkhead doubles as helm backrest
- Engine and fuel tank/ battery boxes in line
- Removable mast for navigation lights
- 1 x Bronze-trimmed stowage lockers port forward
- 1 x Bronze-trimmed gas bottle lockers port forward
- Fold down bronze-trimmed 1 x burner gas hob locker to port
- Helm position to starboard
- Teak bench
- Edson Marine ComfortGrip wheel with PowerKnob
- Vetus throttle control
- VHF Radio
- Beta engine panel
- Fuel gauge
- Steering compass
- 1 x Bronze-trimmed stowage locker
- Bronze-framed companionway hatch
- 4 x washboards and sliding hatch
- Bronze hasp
- Marine plywood and custom SeaGlaze windscreen

- Bronze spring cleats port and starboard
- Bronze bulls-eye deck lights port and starboard
- Bronze fender attachments port and starboard
- Cluster of 4 x bronze-framed deadlights over saloon
- Bronze fashioned cowls over vents port and starboard
- Port vent is cabin heater flue
- Starboard vent is for cabin air circulation
- Large hinged forehatch with cluster of 4 x bronze-framed deadlights
- Bronze mooring cleats port and starboard
- Bronze mooring fairleads port and starboard
- Bronze 'Irens-style' stemhead channel fitting

- Galvanised 10kg Rocna anchor stowed in forepeak
- 10 m Stainless steel chain



- Step down to quarter-sawn Douglas fir saloon sole
- Bright, well-lit accommodation

- Fiddled sideboards port and starboard
- Ship's electrical panel to starboard
- Overhead lockers port and starboard
- Port and starboard long settee berths
- Stained timber slatted hull lining
- Stained timber Irens-style deck beam cappings
- Reading lights port and starboard, fore and aft

- Dickinson Marine 'Cozy Cabin' gas heater to port
- Warming hot plate; stainless steel fiddle
- Stowage alcoves over
- Fiddled sideboard to starboard
- Stowage alcoves under and over
- Downlighters to port and starboard

- Stowage alcoves to port and starboard
- Electric marine toilet
- Lifting panel over
- Space for small holding tank to be fitted
- Anchor and chain stowage forward
- Large forehatch in deckhead with deadlights cluster
- Downlighters to port and starboard



- 25 hp 3 Cyl 25 hp Beta Diesel engine (2017)
- TMC60 Gearbox with 2.83:1 reduction
- Centaflex M Series shaft coupling
- 45 mm + 12 mm Maritex sound insulation
- +10mm cork cladding between 2 x9 mm ply
- Michigan 3-blade 17 x 15 propeller
- Fuel tank - also supplies cabin heater
- Fuel sight gauge engine box
- Vetus hydraulic steering



- Ritchie 'Explorer' steering compass
- Raymarine depth sounder and speedometer
- Wired for Raymarine Autopilot with remote
- (Raymarine Autopilot and plinth not included)



- Flare box (out of date)
- Carbonfibre tiller: emergency/ alternative steering



- 3 x Fenders
- 14 mm Black braided docklines
- Boarding ladder


These particulars have been prepared from information provided by the vendors and are intended as a general guide. The purchaser should confirm details of concern to them by survey or engineers inspection. The purchaser should also ensure that the purchase contract properly reflects their concerns and specifies details on which they wish to rely.


Sandeman Yacht Company

Brokerage Of Classic & Vintage Yachts