Seaward 23 E18 Weekender


Seaward 23 E18 Weekender

Filled with character and capability, the Seaward 23 E18 motor cruiser is a sturdy, seagoing craft with traditional styling and accommodation for up to four people.  Ideal for those new to boating as well as being popular with experienced sailors, the large, deep cockpit area and open backed wheelhouse make this vessel an ideal family cruiser and weekender.

Like its bigger cousins within this all-weather Nelson range, this vessel has undergone both tank testing at Westland Aerospace and testing for stability by the Dept. of Transport. This may be unusual for a craft of this size but comforting to know when you are out in adverse weather conditions. More recently, the Seaward 23 E18 has undergone stability testing with Lloyd’s Register for compliance with the new Recreational Craft Directive. The standard cockpit arrangement is compliant with the regulations for use in wind speeds up to force 6 and wave height up to 2 meters.

View YouTube video of the Seaward 23

This craft can be supplied semi custom built or to the following standard specifications:


Length Overall Mtrs. 7.11 ex platform
Beam Mtrs. 2.69
Draft Mtrs. 0.68
Air Draft Mtrs. (excl. Mast) 2.08
Approx Displacement 2.5
Cruising Speed (largest engines) 18
Top Speed (largest engines) 23
Fuel tanks (litres) 232
Water Tanks 120
Range (Normal cruising speed) 100
Design Category C


Round bilge semi-displacement type with flared bow and forward sloping transom with tumblehome. Varnished teak spray rails and all round 3″ rubber D fendering compliment the purposeful looks of the craft and provide extra protection when going alongside. The hull and all G.R.P. mouldings are hand laid or infused in our modern Lloyds approved factory.  Standard colour is Blue.

Deck / Superstructure

This is a one piece G.R.P. moulding with substantial gunwales and wide non slip decks incorporating a bevelled toe rail for additional safety. The superstructure has a large vertical flange that overlaps with a similar flange on the hull before being through bolted and laminated to the hull. Standard colour is White.

Engine and Stern Gear

The overwhelming customer choice to date has been for twin-engine craft. However single engine versions will always be available to those who wish to choose otherwise. The single screw versions are still supplied with twin fuel tanks and twin battery systems as standard but are fitted with a single rudder. Both the 80hp and 110hp Yanmar common rail diesel models are fitted with bronze aerofoil shaped rudders to suit their higher performance. Twin stainless steel fuel tanks of approximately 25.5 gallons (116 litres) each are standard on all models with gauges on the helm console to indicate the fuel level.

Electrical System

Two 90 amp hour batteries with isolating selector switches are fitted as standard. Power circuits are protected by circuit breakers mounted in the instrument console. Standard electrical equipment includes, two 2- speed pantograph wipers, horn, navigation lights, anchor light, cockpit light, four interior LED lights, two fuel gauges, electric bilge pump with float switch. A 240 volt ring main with two power sockets is included as standard along with a 240 volt microwave cooker

Fore Cabin

Access to the forward cabin is through a oak door from the wheelhouse. The cabin includes two V berths 6′ 2″in length with a folding leaf table. A deep shelf surrounds the whole of the forward area giving ample stowage space. A bulkhead at the forward part forms the chain locker with a watertight access hatch. The heads compartment is to port containing a marine WC, hand basin and a cold water tap. The ‘no gas’ galley unit is fitted to starboard and now includes an Avonite worktop fitted with a neat ceramic diesel fired hob and inset stainless steel sink with Avonite cover. The fuel supply to the diesel hob is connected direct to one of the main fuel tanks. A 240v microwave cooker is fitted as standard. Power for the microwave is via the ring main shore supply connection. An inverter/charger is available on the optional extras list that will enable the microwave and ring main to be used when shore power is not available. Ventilation is by way of two vents fitted on the coach roof, a deck hatch and six port lights of the opening type.

Wheelhouse / Cockpit

The wheelhouse is arranged with the helm seat position to port and a matching seat to starboard for the navigator/crew. The hydraulic steering, engine controls and instruments are all mounted in the GRP console. The helm and navigators seats are fitted on top of the heavily insulated engine covers. These covers hinge back for easy access to service points. A lockable oak desk locker is fitted in front of the navigator’s seat for general stowage of navigation instruments etc. The area under the desk locker is fitted out with a useful oak hanging locker. The rear part of the engine covers form seats that are convertible to form two extra berths. This is achieved by way of a pair of optional infills fitted between the engine covers and aft cockpit seats. When not in use, the infills are made to stow away under the forward cabin shelf. The rear bench seat has a lift out stowage locker to gain access to the steering gear and fuel valves. A versatile full canopy with three doors and 6 windows is supplied as standard with the Seaward 23. The canopy is designed to be used in the up position in bad weather to provide a cosy shelter from the elements. In sunny weather the canopy sides can be removed separately and with the rear door rolled up the canopy turns into a sunshade. The hinged stainless steel support frames allow the canopy to be unclipped from the wheelhouse and folded down to stow on the aft coaming. An additional table leg socket is fitted in the cockpit to provide an al-fresco dining area


Deck Fittings

Standard fittings include, heavy duty bow roller, stainless steel pulpit, three stainless steel mooring bollards, hand rails on wheelhouse and coachroof, chain pipe, two fairleads forward, mast, four fender eyes each side and a set of anchor chocks. Grab handles are also fitted on the aft wheelhouse cappings, to assist access from the cockpit to the side decks. An optional pilot type inboard handrail system or an extended pulpit are available as variations to the standard layout.


The craft is finished with oak veneered bulkheads and oak trim. Side and overhead linings in the wheelhouse and cabin are of foam-backed vinyl. The shelf in the cabin is carpeted. The hull sides above the V berths are covered in foam-backed vinyl. Foam cushions are provided for the V berths and the cabin table for use when in the lowered position. The cabin sole is carpeted and covers are supplied for the portlights. Owners are given choice of materials for interior and cockpit upholstery.


The following items are included as standard in addition to the equipment already mentioned:
•    Fire extinguishers (1-DP Manual + 2- FE1000 Automatic)
•    Oak book rack
•    10kg anchor with 10 meters of 5/16 chain
•    55m length of anchor warp
•    4 x fenders with ropes
•    Set of mooring ropes
•    Steering compass
•    Slide opening wheelhouse side windows
•    120 litre fresh water tank (bag type)
•    Hand bilge pump
•    Gaff and flag halyards
•    Teak flagpole with deck socket
•    Sacrificial anode (2 on twin engine models)
•    12m long shore power lead
•    Red antifouling with white boot-top

Launching & Commissioning

Prices include launching, commissioning, handover and a two-hour sea trial at Cowes. The sea trial includes useful instructions on manoeuvring your Seaward with twin engines.

Safety Features

All Seaward boats have a number of outstanding easy to get used to safety features:

On single screw Seaward 23’s:
• Diesel powered
• Conventional shaft drive with rudder
• Twin stainless steel fuel tanks with separate fuel fillers
• Primary fuel filter with water separator
• Twin batteries with facility to start the engine on either one or both batteries together
• Emergency steering
• Automatic bilge pump with bilge alarm warning light

On twin screw Seaward 23’s
• Each engine fully independent with it’s own stainless steel fuel tank, fuel filter and start battery
• Diesel powered
• Conventional shaft drive with twin rudders
• Emergency fuel link valve to divert both fuel tanks to supply either engine in case one engine should break down.
• Twin batteries with facility to start either engine on either one or both batteries together or both engines off one battery.
• Emergency steering
• Automatic bilge pump with bilge alarm warning light
• Contra rotating propellers with 3/4 length deep keel ensure the best possible course holding and manoeuvrability
• Boat will rotate within it’s own length in either direction with one engine ahead and the other astern.

Price List

Prices are afloat and in commission at Cowes including VAT @ 20%

The above boat prices includes as standard: bronze airfoil rudders, midship cleats (for springs), ceramic diesel fired hob, microwave cooker and shore power, two coats Hempel antifoul paint, full fuel tanks, launching, commissioning and free delivery by sea to any Solent port.

The Seaward 23 comes with a comprehensive standard specification. The following optional extras enable you to customise your vessel if you so wish. Apart from the items listed we are able to supply and install most types of Raymarine electronic navigation aids and safety equipment.

Seaward are always pleased to discuss any non standard requirement P.O.A.

Warning. All prices stated on this web site are subject to change without notice. Seaward always advise clients to obtain up to date current prices from Seaward before relying on the information contained herein.

 Options PricesValid from September 2017SEAWARD 23   
1Engine option 1Single 4JH CR 80HP£97,546
Engine option 2Twin 4JH CR80HP£118,369
Engine option 3Twin 4JH CR110HP£123,428
2MachineryRope CuttersStripper' type rope cutter each (two required on twin screw models)£678
Bow ThrusterVetus 35 kgf bow thruster with joystick control at the helm£3,970
3SystemsTrim TabsTrim tabs£1,312
WaterPressurised hot and cold water system via calorifier. Provides hot and cold water at heads and galley£1,043
Cockpit showerHot & cold cockpit shower facility (requires pressure water system to be installed).£234
Toilet options
Holding tankHolding tank system1, 61 litre holding tank, deck emptying facility and diverter valve from sea pump out£785
Holding tank system2, 61 litre holding tank, deck emptying facility, tank to sea hand pump out and diverter valve from sea pump out£1,190
Holding tank system3, 61 litre holding tank, deck emptying facility, tank to sea electric pump out and diverter valve from sea pump out£1,975
HeatingCabin heating via diesel hob blower lid£465
Eberspacher D2 Airtronic hot air heating system with two outlets.£2,280
4ElectricalCharger/InverterVictron 1600W/70-16 Multi-plus inverter/charger. Provides mains voltage on board when shore power is not available. Acts as a battery charger when plugged into shore power. Automatic operation installed with remote control panel£2,006
Independent charger and inverterVictron Phoenix inverter C12 1600, 1600 watt inverter with inverter control panel and twin output separate Phoenix charger 12/30 .£2,342
12v general purpose socket£90
BreakersSpare circuit breakers fitted and wired in each£70
Screen washScreen washers with electric pump.£194
Base Pack:1 x Radio/CD/MP3/Aux Socket.
1 x Pair Pioneer 17cm Speakers£416
Mid Pack:1 x Radio CD/Radio/USB/Aux
2 x Pair Pioneer 17cm Speakers£715
4.5Navigation and Communication equipment packs.Local PackPackage includes Raymarine 7 inch Es78 HybridTouch display this technology offers a choice of intuitive touch screen interaction with pinch-to-zoom or full keypad control with GPS, depth, speed & log i50 display & Ray50 VHF £4,472
Coastal PackPackage includes Raymarine 9 inch Es98 HybridTouch display this technology offers a choice of intuitive touch screen interaction with pinch-to-zoom or full keypad control with GPS, depth, speed & log via i70 colour display & Ray70 VHF with AIS Receiver£6,705
Offshore PackPackage includes Raymarine 9 inch Es98 HybridTouch display this technology offers a choice of intuitive touch screen interaction with pinch-to-zoom or full keypad control with GPS, Evolution autopilot system, 18 Quantam Radar, depth, speed, log & wind via i70 colour display, AIS Class B Transceiver & Ray60 VHF £11,824
5InteriorSoleTeak and holly laminated sole in forward cabin£557
FootrestSlide adjustable footrest with lock control£425
6ExteriorWindlassElectric reversing windlass with foot switch control from foredeck. Includes special self launch/ self stow bow roller, Bruce type anchor and 40 metres of 6mm chain£1,820
Keel shoeGRP keel shoe (necessary for craft that dry out on rough ground)£808
Legs'Yacht Leg' telescopic grounding legs including built-in stowaway£1,540
Stern platformDeluxe teak/stainless bathing platform with built in swim ladder£1,762
Plastimo teak/stainless bathing platform with built in swim ladder£1,169
Folding transom mounted swim ladder£299
DavitsWeaver snap davits for dinghy£917
Fender basketsPair of transom mounted fender baskets£371
Rubber spray rails instead of teakNEC
Rail optionsExtended solid pulpit instead of standard foredeck pulpit£786
Pilot type handrail system instead of standard grab rails£683
Cockpit berthsConversion for twin berths in cockpit. Includes pair of stowaway extensions and engine box cushions£608
Loose ItemsPortable coolbox suitable for S23 with separate power supply and circuit breaker and socket£186

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