Seaward 27 E20 Motor cruiser

Seaward 27 E20 Motor cruiser

“No doubt she will prove just as formidable as her previous siblings.” (Powerboat & Rib Magazine)

The Seaward Nelson 27 E20 is a new addition to the range that has found favour for many years with discerning motorboat users and ex sailors alike. The 27 has a longer wheelhouse than the Seaward 25 and a longer hull with a built in transom platform. It shares the impeccable sea boat capability and handling of the other models. Twin diesel inboard engines with V drive gearboxes and shaft drives are standard on this craft, now with the Yanmar 4JH common rail 110Hp engines. The engines are installed completely independently of each other, each with their own fuel tank and electrical system. The deep 3/4 length keel with twin rudders and contra-rotating propellers make simple work of negotiating the most difficult berth with this craft that will rotate in its own length when one engine is put astern and the other ahead. This amazing manoeuvrability is not just the result of having two engines but is the result of a combination of many other factors unique on a craft of this size and type.


LOA: 27′ 5″ 8.32m
LWL: 24′ 2″ 7.32m
Beam OA: 8′ 10″ 2.69m
Beam WL: 7′ 8.5″ 2.35m
Draft: 2′ 5″ 0.73m
Draft keel to underside of boot top: 2′ 7.5″ 0.8m
Air draft afloat: 6′ 9.5″ 2.070m
Displacement Approx. (lightship: 3.00 tons 3050kg
Fuel capacity: 2 x 33 gal 2 x 150 ltrs
Maximum number of persons: 8 x 75 kilos
Additional load capacity: 150 kilos


Round bilge semi-displacement type with flared bow, forward sloping transom and built in transom platform. Foam elastomer spray rails and all around 3″ foam elastomer D fendering compliment the purposeful looks of the craft and provide extra protection when going alongside. Standard colour Blue.

Deck and Superstructure

This is a G.R.P. moulding with substantial gunwales and wide non-slip decks incorporating a beveled toe rail. The superstructure has a large vertical flange that overlaps with a similar flange on the hull before being laminated to the hull. Standard colour White.

Engines and Sterngear

The craft is supplied with Yanmar common rail engines with conventional stern gear and twin rudders. Twin GRP fuel tanks of approximately 150 litres each provide a separate supply to each engine. An emergency link valve is included to enable all the fuel to be available to one engine in the event the other engine should break down.

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


Access to the forward cabin is through an oak door from the wheelhouse with a sliding hatch overhead that eases the access, headroom and visibility in this area
The cabin includes two V berths 6′ 2″ in length with a fixed table that is also used as a berth infill that allows conversion to one large double berth. As standard this table may also be used in the cockpit but if the large cockpit table option is selected it cannot be used as an infill. A deep shelf surrounds the whole of the forward area giving ample stowage space.
A bulkhead at the forward part forms the chain locker fitted with a watertight access hatch.
The ‘no gas’ galley unit with improved stowages is fitted to starboard and 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.
The fully moulded heads compartment is to port containing a marine WC, hand basin and a cold water tap. Hot water is an option.
Ventilation is by way of two vents fitted on the coach roof, a deck hatch and six opening port lights.
There is an alternative galley up option as shown on the general arrangement drawings.


The wheelhouse has ample headroom and is long enough to have a berth. It is fully enclosed with two side and two aft slide opening windows and a stable type door giving plenty of fresh air
Entrance to the wheelhouse is from the cockpit via a stable type door arrangement. The steering, engine controls and main instruments are all mounted in an ergonomic GRP console moulding. A chart table/stowage locker is fitted to starboard with a hanging locker beneath.
Padded seats are fitted each side for the helmsman and navigator. These seats are fitted with adjustable sliders
The helm position is on the port side and is fitted with the optional innovative and unique sit/stand helm position.
There is a pair of stowage lockers outboard of each of the wheelhouse seats. There is a desk locker to starboard and there is a useful oak hanging locker underneath.
Aft of the helm and crew seats is either a pair of bench seats as shown in arrangement 1 or a third padded seat as shown in arrangement 2.
In arrangement 1 the bench seats extend under the seat supports and with loose cushions can be converted to berths.
In arrangement 2 this is the case on the starboard side and on the port side there is a fold up table between the two seats, the helm seat rotates on its base.


The cockpit is fully self-draining by way of drains through the transom. The sole slopes slightly downwards at the aft end to ensure full drainage. There is easy access to the engines through the forward cockpit seats that have hinged tops, and access to the steering gear under the aft seat locker.
The aft seat has a removable centre part to allow passage through the centre onto the aft platform.
There are small lockers fitted port and starboard for general stowage.
The engine covers form seats and a table can be fitted between the forward and aft cockpit seats.
A tonneau cover is supplied as standard with the Seaward 27.
A versatile full canopy with three zipped openings and 6 windows is supplied as an option with the Seaward 27. 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 and rear can be removed separately and the canopy turns into a sunshade. The hinged stainless steel support frames allow the canopy to be unclipped from the wheelhouse and the frames can be folded down to stow on the aft coaming.

Deck Fittings

Standard fittings include:
• Heavy duty bow roller
• Stainless steel pulpit
• Three stainless steel mooring bollards
• Hand rails on wheelhouse and coach roof
• Chain pipe
• Two fairleads forward
• Mast
• Anchor chocks

Grab handles are also fitted on the aft wheelhouse capping, 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 flush fitting overhead linings in the wheelhouse and cabin are of foam-backed vinyl. The shelf in the cabin is carpeted. Foam cushions are provided for the V berths and aft cockpit seat. The cabin sole is carpeted and covers are supplied for the port lights. 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 in engine spaces
• Oak book rack
• 10kg anchor with 10 metres of 5/16” chain
• 55m length of anchor warp
• 4 x fenders with ropes
• Set of mooring ropes
• Steering compass
• Slide opening wheelhouse side and aft windows
• 120 litre fresh water tank
• Hand bilge pump (to back up electric pump)
• Gaff and flag halyards
• Teak flagpole with deck socket
• Boarding ladder
• Sacrificial anodes
• 15m long shore power lead
• Red antifouling with white boot-top
• Tonneau cover

Seaward Boats come with a comprehensive standard specification.  Optional extras enable you to customise your vessel if you so wish. We are able to supply and install most types of Raymarine electronic navigation aids and safety equipment.

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