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1998 Seaward 23

Burnham-on-Crouch, United Kingdom


The Seaward 23 is a popular semi-displacement motor cruiser, deservedly sought after thanks to its excellent sea keeping, practical layout, and excellent build quality to a commercial specification. Rarely available, Elena is a very good example of her class and has clearly been regularly maintained and cared for. She is a sought-after later twin screw version, fitted with twin Yanmar 75hp diesel engines on shafts providing very good manoeuvrability, has diesel heating, was professionally copper-coated in May 2021, and is ready to enjoy the summer!

Viewing by appointment only through our Essex office on (01621) 785600. 

Basic Boat Info

Tax Status: Paid
Boat Name: Elena
Make: Seaward
Model: 23
Year: 1998
Condition: Used
Category: Power
Builder: Seaward Marine
Designer: Arthur Mursell (TT Designs)
Construction: Fiberglass


Length: 23 ft
Length Overall: 23'4 ft
Beam: 8'10 ft
Max Draft: 2'3 ft
Min Draft: 2'3 ft
Displacement: 2,500 kg

Engines / Speed

Engines: 2
Engine #1 Specs:
  • Make: Yanmar
  • Model: 4JH2-HTE
  • Drive Type: Direct
  • Fuel: Diesel
  • Engine Power: 75hp
  • Type: Inboard
  • Propeller Type: Bronze
  • Engine Hours: 1349
  • Engine Location: Port
Engine #2 Specs:
  • Make: Yanmar
  • Model: 4JH2-HTE
  • Drive Type: Direct
  • Fuel: Diesel
  • Engine Power: 75hp
  • Type: Inboard
  • Propeller Type: Bronze
  • Engine Hours: 1351
  • Engine Location: Starboard
Total Engine Power: 150hp
Cruising Speed: 8 kn
Maximum Speed: 18 kn


Fuel Tanks: 1
Fuel Tank Capacity: 232 L
Water Tanks: 1
Water Tank Capacity: 100 L



Essex - Clarke & Carter
Burnham Yacht Harbour Foundry Lane
Burnham-on-Crouch, Essex, GB, CM0 8BL
Tel:+44 (0)1621 785600


The cosy cabin has a double vee berth forward with central table which can be dropped to form a double berth, and good stowage in various lockers and shelves. Aft to starboard is a well-designed galley consisting of a Plastimo Neptune 2000 2-burner gas cooker with grill, stainless steel sink, folding top to give additional worktop space, and storage. To port is a separate heads compartment fitted with a Jabsco marine toilet (new pump assembly and seacock 2021), moulded basin, mirror, opening portlight, and fitted storage for the table. Teak interior woodwork, grey linings, and light blue upholstery combine to create a feeling of traditional high-quality workmanship, an ideal setting for a couple looking for long weekends away in comfort. Eberspacher diesel fired warm air heating system. Moving aft to the wheelhouse, comfortable swivel-mounted helm and navigators seats are complemented by the large, practical cockpit fitted with a wide bench seat aft.  

Mechanical Systems

Located in insulated engine boxes, Yanmar 4JH-2HTE 4-cylinder 75hp turbo diesel engines. Freshwater cooled via heat exchangers. Dual single lever controls with electric start. Shaft drive via Hurth gearboxes to bronze propellers. 

The engines have run for 1,351hrs from new, equating to an ideal average usage of approximately 60hrs per season, and are in very good cosmetic condition. In recent years maintenance has been very thorough, with the last oil change just over 20hrs ago, and lots of service items replaced including new turbochargers, exhaust elbows, strainers, shaft seals, cutlass bearings, and injectors serviced, all to ensure reliability and economical service.   

Electrical Systems

2 x 12v Batteries (new 2021) charged via engine alternators. Battery isolator switch. Shorepower system with ring mains. Full cabin lighting. 

Deck Equipment
  • Plough type anchor with chain and warp
  • Lofrans manual anchor windlass 
  • Self-stowing stainless steel bow roller
  • Stainless steel pulpit and grab rails
  • Stainless steel bathing ladder
  • Full cockpit canopy in dark blue
  • Removable beaching legs
  • 2 x Windscreen wipers
  • Warps and fenders
Navigation Equipment
  • Skipper compass
  • ICOM M411 DSC VHF radio
  • Autohelm ST50 Bidata with depth sounder and speed/log
  • Standard Horizon CP300 colour GPS chart plotter
  • Autohelm ST50 radar
  • Navigation lights 
Safety Equipment
  • Fire extinguisher
  • Fire blanket
  • First aid kit
  • Horseshoe lifebuoy
  • Emergency steering
  • Stainless steel foghorn
  • Electric bilge pump
  • Manual bilge pump

Seaward 23 built in 1998 by Seaward Marine to a design by Arthur Mursall (TT Boat Designs). GRP semi-displacement hull (professionally copper coated beneath the waterline in May 2021) in dark blue gelcoat laid up to a commercial specification. White GRP superstructure and decks with moulded light grey non-slip surfaces. Hydraulic wheel steering to rudder. Teak lower and rubber upper rubbing strakes. Demountable wooden antenna mast.


The company normally acts as brokers for the vendor who unless otherwise stated is not selling in the course of a business. Whilst every care has been taken in the preparation of these particulars the correctness is not guaranteed and they are intended as a guide only and do not constitute a part of any contract. A prospective buyer is strongly advised to check these particulars and where appropriate and at his own expense to employ a qualified marine surveyor to carry out a survey and/or to have an engine trial conducted which if conducted by us shall not imply any liability on our part.

General note on safety equipment: Any safety equipment such as liferaft, fire extinguishers and flares etc., are usually personal to the current owner(s) and if being left on board as part of the sale of a used vessel, may require routine servicing, replacement, or changing to meet a new owner’s specific needs.

Disclaimer This calculator is intended solely for general informational purposes, and to provide a rough estimate based on the information you provide. You should not base your decision on this estimate alone.