1978 Seamaster 813

Norfolk Broads
Viewing strictly by appointment through Topsail

1979 Aquafibre 31
For Sale
Price: £24,000
1974 Freeman 23
Price Reduced
Price: £8,250
1978 Seamaster 813
1978 Seamaster 813
1978 Seamaster 813
New Listing
1978 Seamaster 813
1978 Seamaster 813
1978 Seamaster 813
1978 Seamaster 813

General Specification

Designer :
8.13m  (26ft 8in)
Beam :
2.77m  (9ft 1in)
Draft min:
0.6m (2ft 0in)


  • GRP construction
  • Original gelcoat finish throughout
  • Interior fully redecorated
  • Windscreen and sliding windows of main cabin refurbished (2019)
  • Folding windscreen enabling vessel to (historically) pass under all Broadland bridges
  • Escape hatch in front cabin refurbished (2023)
  • New lining fitted to cockpit – varnished and epoxied marine-ply
  • Rear cockpit bench seat re-designed with more comfortable curved back rest & new cushions (2020)
  • New sound proofing fitted to underside of cockpit floor (2018)
  • Easy access to the engine under cockpit floor
  • Antifouling stripped, epoxy coated and re-antifouled (approx. 2020)
  • No evidence of osmosis
  • Wintered ashore and winterised every year under storage tent since 2021

Mechanical & Electrical

  • BMC Leyland 1800cc  diesel engine
  • Serviced annually
  • Bow thruster
  • Stern thruster (fitted 2017)
  • Shore power
  • Mains sockets fitted throughout
  • Mains light in both cabins
  • 4 x batteries
  • 240V battery charger fitted (Sterling Power Pro Charge Ultra – fitted 2017)


  • 4 berths in 2 cabins
  • V-berth in forecabin (with infill to convert to double)
  • Saloon dinette converts to second double berth
  • Table in dinette seats 4 & folds in half to maximise space
  • Gas cooker with 2 rings, grill and oven
  • Stainless steel sink with hot and cold taps
  • Hot water from calorifier
  • Electric fridge in cockpit under navigators seat
  • 2 x gas bottles (not guaranteed full) inside metal self-draining container
  • Jabsco Electric Lite Flush toilet with stainless steel holding tank (2021)
  • Wash basin with hot and cold taps
  • Webasto warm air heating


Navigation Equipment

  • Combined Speed and depth meter
  • Navigation Lights

Safety Equipment

  • Boat Safety Scheme certificate to June 2027
  • 2 x Fire extinguishers (not guaranteed in date)
  • Fire blanket
  • Twin channel gas alarm
  • Carbon monoxide alarm

Deck Equipment

  • New bespoke designed canopy to give more headroom than original (2021)
    • All sides of canopy can be removed separately
    • Rear section of canopy can be lowered separately, leaving remaining front section as sun shade
  • Re-designed bathing platform in iroko
  • Iroko steps from bathing platform to cockpit
  • Stainless steel folding safety/bathing ladder
  • Davits
  • Electric winch for mud weight
  • Mud weight
  • Original pulpit
  • Guard rails (fitted 2020)
  • Full set of fenders
  • Various warps


In excellent overall condition, this is a shining example of a  Seamaster 813 with many bespoke features.


She benefits from the addition of both a bow and stern thruster as well as the new bespoke canopy designed to increase the amount of space and head height available when sitting on the also newly designed and more comfortable cockpit bench seat.


Attention to detail and thoughtful additional features throughout put her at the top of her class.


Winter Storage: The tent used for winter storage is located at a local boatyard and is available for sale by separate negotiation.


Topsail Marine Yacht Brokers is acting as brokers (or in the case of classified adverts, advertising medium) only and unless stated otherwise the vendor is not selling in the course of business. Whilst every care has been taken in their preparation, the correctness of particulars is not guaranteed and they are intended as a guide only. Prospective purchasers are strongly advised to check all particulars and where appropriate employ an independent qualified agent to carry out a survey and/or sea/river trial. Vessels are offered subject to prior sale, amendment or withdrawal without notice.

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