Seaward 25 ‘Argentor IV’

Seaward 25 ‘Argentor IV’
















This 1996 Seaward 25 comes with an enclosed wheelhouse and very well maintained twin Yanmar 100HP shaft driven diesel engines. Her inventory includes two berths, separate heads compartment with electric marine W.C., galley, hot air heating, electric windlass, new colour chartplotter/radar, full cockpit enclosure and more. She has been well cared for and is excellent value. Viewing recommended.

Builder: Seaward Marine Ltd, Isle of Wight
Designer: Arthur Mursell,TT Boat Designs
Hull Shape: Semi-Displacement

LOA: 7.74 m
Beam: 2.69 m
LWL: 6.70 m
Minimum Draft: 0.73 m
Displacement: 3000 kg

Total Power: 200 HP

Engine 1:
Engine Brand: Yanmar
Year Built: 1996
Engine Model: 4JH2-UTE
Engine Type: Inboard
Engine/Fuel Type: Diesel
Engine Hours: 1760
Propeller: 3 blade propeller
Drive Type: Direct Drive
Engine Power: 100 HP

Engine 2:
Engine Brand: Yanmar
Year Built: 1996
Engine Model: 4JH2-UTE
Engine Type: Inboard
Engine/Fuel Type: Diesel
Engine Hours: 1760
Propeller: 3 blade propeller
Drive Type: Direct Drive
Engine Power: 100 HP

Cruising Speed: 14 knots
Maximum Speed: 19 knots

Fresh Water Tanks: 1 (20)
Fuel Tanks: 2 Stainless steel (66)

Number of single berths: 2
Number of cabins: 1
Number of heads: 1


Inside Equipment
Marine head
Battery charger
Manual bilge pump
Electric bilge pump

Electrical Equipment
Shore power inlet
Electrical Circuit: 12V

Outside Equipment/Extras
Cockpit cushions
Electric windlass

Cockpit cover


G.R.P. with teak joinery and teak spray rails


Round bilge semi-displacement type with flared bow and forward sloping transom with tumble-home.

Rubber “D” fendering provides all round protection

Deck and Superstructure

One piece GRP moulding which is through bolted and laminated to the hull.


2 x 4 cylinder 100hp Yanmar marine diesel engines fitted with 2:1 Hurth hydraulic gearboxes driving 2 x 3 blade contra rotating propellers on 35 mm diameter stainless steel shafts giving maximum speed of around 20 knots. Twin cast bronze rudders are fitted. Fuel consumption at 15 knots is approximately. 2.0 gallons per hour per engine. Turbo chargers replaced 2005. 2 x 66 gallons stainless steel fuel tanks. 1 x 100 litre water tank. Approx engine running hours: 1760 hrs.

In 2012 the engines were pressure tested. New fuel pump fitted to the port engine.

Stripper type rope cutters


The cabin includes two V berths with a removable table.

Double berth conversion

A shelf surrounds the forward area giving ample stowage

The heads compartment is to port and comes with a marine toilet (electric), hand basin and cold water tap (hand pump).

The galley is to starboard and comes with a Plastimo Neptune 2 burner gas cooker and grill, stainless steel sink, cold water.

Eberspacher hot air heating system (3 x outlet).

Wheelhouse and Cockpit

The enclosed wheelhouse is arranged with a helm seat to port and a matching seat to starboard for the Navigator / Crew

Opening hatch above helm seat

Pair of sliding wheelhouse side windows

Hydraulic steering

Windscreen wipers with screen washers and demisters

Full cockpit enclosure with zip up doors, windows and removable panels

Three bench seats in the cockpit with cushions.

 Electrical and Navigation

Two 12 Volt batteries

Navigation lights

Cockpit and interior lights

Electric bilge pump

Shore power with sockets

12 V. socket


2015 Garmin 4012 Colour Chartplotter / 18” HD radar and sonar

Navman 7200 DSC VHF

Autohelm Tridata (speed, depth & log)

Autohelm Sport Pilot and remote

Steering Compass


Other Equipment

Stainless Steel Pulpit with stanchions and guardrails

Lofrans Electric anchor windlass with self stow bow roller

Bruce Type anchor with 30 metres of chain

4 x Manual fire extinguishers

Fire Blanket

Mooring lines and fenders

Extra mooring cleats amidships

Manual bilge pump

Stainless steel and teak bathing / boarding platform

Rope type ladder with plastic steps

Weaver snap davits for dinghy (no dinghy)

Dip Sticks for fuel tanks

Maintenance Record from 2014 to 2017


Fuel distribution panel and new primary filters

Engine oil and filters changed twice, fuel filters changed


New seals in steering ram

New raw water impellors

New flywheel housing and drive plate starboard engine

4 x new engine mountings starboard engine

2  x extra mooring cleats amidships

New Garmin chart plotter and HD radar and sonar

Additional electrical distribution panel

New electric toilet

Lift out power wash, antifouling and all new anodes

Engine oil and filters changed twice, fuel filters changed.


Engine oil and filters changed twice, fuel filters changed


Lift out power wash, antifouling and all new anodes

Hull cleaned and polished

New shaft seals fitted

New manual bilge pump

New electric bilge pump

New exhaust flaps fitted

New cockpit drain flaps

New exhaust mixing elbow fitted port engine

New shaft rope cutters

Engine oil and filters changed twice, fuel filters changed

Broker’s Comments

“Argentor IV” has been well maintained.

In 2012 the hull was stripped back below the waterline, it was then epoxied and antifouled.

Engines serviced every year.

Maintenance record and upgrades from 2014

This Seaward 25 is excellent value and is certainly worth travelling to view! We sold this boat to the present owner in 2014 and he has been meticulous about maintenance.

Builders Remarks

The Seaward 25 will appeal to a couple or small family requiring a craft for safe comfortable coastal cruising.

Seaward boats are generally the first choice of professional mariners and experienced yachtsmen who understand the importance of a well designed and constructed craft, that has stood the test of time

Lying: Waterford, Ireland


Asking price: €49,500 Tax Paid (EUROS)

Selling Agents: The Boat Development Co Ltd, Prospect Road, Cowes, Isle of Wight PO31 7AD Tel 01983-280333 EMAIL:

The particulars detailed herein are intended to give a fair description of the vessel but their accuracy cannot be guaranteed. These particulars are not a part of any contract or offer and are supplied on the understanding that all negotiations shall be through The Boat Development Co Ltd, who are acting as brokers only. The prospective purchaser is strongly recommended to check the particulars and where appropriate at his/her own expense, to employ qualified agents to carry out surveys, structural and or mechanical and electrical.