# 1998 Sea Ray 310 Sundancer

> Big Blue, a 1998 Sea Ray 310 Sundancer lying in Swansea, with twin D-Tronic 250hp diesels, Bravo 3 drives and 2025 Gelshield… £39,000 — YACHTS.CO Swansea.

Web page: https://yachts.co/boats/sea-ray-310-sundancer-051181/

## Key facts

- Status: For sale
- Price: £39,000
- Condition: Used
- Make: Sea Ray
- Model: 310 Sundancer
- Year: 1998
- Type: Sports Boat
- Length overall: 34ft (10.36m)
- Beam: 3.4m
- Draft: 0.91m
- Cabins: 2
- Berths: 4
- Heads: 1
- Engines: 2 x Mercruiser D-Tronic 250hp
- Fuel: Diesel
- Hull construction: GRP
- Keel: Deep V Planing
- Lying: Swansea
- Listed by: YACHTS.CO Swansea
- Contact: 01792 465550, info@yachts.co
- Reference: 051181

## Description

General Remarks

Big Blue is a well-presented example of the ever-popular Sea Ray 310 Sundancer, offering a practical and sociable layout combined with dependable diesel performance. This model is well regarded for its balance of comfort and capability, making it equally suited to coastal cruising and extended weekends aboard.

The current owner has invested both time and care into maintaining and upgrading the vessel. A comprehensive programme of works has been carried out in recent years, including significant mechanical attention such as turbo work, riser replacement, refurbished heat exchangers, and a full outdrive service with new bellows and universal joints, this gives a new owner confidence that is has been well looked after. More recent works in 2025 include antifouling, anodes, hull preparation with Gelshield epoxy, and a full compound and polish.

On deck, the addition of the Dek-King faux teak, replacing the standard carpet, provides a smart and practical finish, complemented by a full set of cockpit canopies which have benefitted from window renewal. The cockpit itself offers a generous social space, ideal for entertaining or relaxing at anchor.

Below decks, the layout is both functional and comfortable, with a forward double berth and a well-sized aft cabin, along with a heads compartment accessible from both the saloon and aft cabin. The upholstery is reported to be in very good condition for the age, contributing to a welcoming interior space. She is fitted with Air-Con (Heat and Cool) for comfort in winter and summer.

The inventory also reflects thoughtful upgrades including, inverter, bow thruster with remote, and a well-rounded navigation package. A 2023 survey is available for inspection by request.

Overall, Big Blue represents a well-maintained and extensively updated example of this popular sports cruiser.

Broker's Remarks

In my view Big Blue is a boat that has clearly been enjoyed and consistently looked after by her current owner. It’s not often you see an example where so much has been done in recent years, particularly in terms of both mechanical servicing and general upkeep.

She presents very well for her age, with the upholstery and overall cosmetic condition standing out, and the upgrades such as the decking and navigation equipment really adding to the package. The engine work and recent servicing should also give a level of reassurance to the next owner.

She feels like a solid, honest example of the 310 Sundancer—ready to be enjoyed in the same way the current owner has used her.

## Accommodation

- Convertible Saloon Seating Area
- Upholstery in Very Good Condition for Age
- Fusion Audio System with Speakers (2022)
- Sink with Pressurised Water
- Hob
- Fridge
- Storage
- Enclosed Heads Compartment
- Access from Saloon and Aft Cabin
- Marine Toilet
- Sink with Shower
- Forward Double Berth
- Aft Cabin Double Berth
- Storage Throughout

## Mechanical and rigging

- GRP Planing Hull
- White Hull with Radar Arch
- Hull Scraped and Gelshield Epoxy Applied (July 2025)
- Compounded and Polished (July 2025)
- Twin D-Tronic 250 Diesel Engines
- Engine Hours: 1276 (Port) / 1140 (Starboard)
- Bravo 3 Outdrives
- Outdrives Serviced (July 2025)
- New Bellows and Universal Joints (July 2025)
- New Stainless Steel Propellers (2019)
- Port Turbo Reconditioned (2026)
- Starboard Turbo Replaced (2019)
- New Risers (2019)
- Heat Exchangers Refurbished (2019)
- Engine Belts Replaced (Nov 2025)
- Engine Freshwater Flush Kit (2017)
- Serviced by Owner (July 2025)
- Average Speed: 23 Knots
- Maximum Speed: 35 Knots
- Bow Thruster (Max Power, 2013) with Remote
- Batteries Replaced (2023) – 2x 180Ah Leisure, 1x 180Ah Starter
- New Calorifier (2023)
- 700W Waeco Inverter (2019)
- Webasto Heating (2013)

## Inventory

- Spacious Cockpit Seating Area
- Cockpit Table
- Dek-King Faux Teak Decking, Fully Margined (2017)
- Full Cockpit Canopies (New 2017, Windows Renewed 2023)
- Electric Anchor Windlass
- Swim Platform with Boarding Ladder
- Raymarine RL70C Pathfinder Radar
- Raymarine A78 Chartplotter
- Raymarine SmartPilot Autopilot with Head Unit (2018)
- Raymarine Tri-Data (2025)
- VeeThree Digital Engine Monitoring System (2013)
- Lowrance Link-8 VHF
- Ropes and Fenders
- Anodes Replaced (July 2025)
- Antifouled (July 2025)
- 2023 Survey Available Upon Request

## Photos

- Sea Ray 310 Sundancer: white sports cruiser with dark blue canopy afloat in a marina beside modern apartment blocks: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-white-sports-cruiser-dark-blue-2-1600.webp
- Sea Ray 310 Sundancer: stern and swim platform with name decal, canopy closed, moored alongside a timber pontoon: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-stern-swim-platform-name-transom-3-1600.webp
- Sea Ray 310 Sundancer: starboard side deck with stainless guardrail and windscreen, viewed from the pontoon: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-starboard-side-deck-stainless-guardrail-4-1600.webp
- Sea Ray 310 Sundancer: white foredeck with deck hatch and guardrails, marina and buildings in the background: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-white-foredeck-hatch-stainless-rail-5-1600.webp
- Sea Ray 310 Sundancer: cockpit under canopy with faux teak decking, curved white seating and table: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-cockpit-full-canopy-faux-teak-6-1600.webp
- Sea Ray 310 Sundancer: helm seat and dashboard in cream upholstery, viewed through the open canopy: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-helm-seat-companion-seating-cream-7-1600.webp
- Sea Ray 310 Sundancer: helm station with wooden-rimmed wheel, gauge cluster and chartplotter screen: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-helm-console-wooden-rimmed-wheel-8-1600.webp
- Sea Ray 310 Sundancer: dashboard seen from behind the wheel, with throttle levers and twin gauge panels: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-dashboard-wooden-steering-wheel-9-1600.webp
- Sea Ray 310 Sundancer: raymarine display unit mounted beside the helm, with engine gauges behind: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-raymarine-display-unit-mounted-dashboard-10-1600.webp
- Sea Ray 310 Sundancer: row of round engine gauges set in a dark panel along the dashboard: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-row-round-analogue-engine-gauges-11-1600.webp
- Sea Ray 310 Sundancer: windscreen and dashboard with companionway opening to the cabin on the left: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-forward-helm-curved-windscreen-12-1600.webp
- Sea Ray 310 Sundancer: two cockpit speakers with dark grilles fitted into the white side moulding: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-cockpit-speakers-mounted-white-side-13-1600.webp
- Sea Ray 310 Sundancer: curved cockpit seating around a white table on faux teak decking: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-shaped-cockpit-seating-around-white-14-1600.webp
- Sea Ray 310 Sundancer: moulded cockpit wet bar with sink and lidded storage compartment: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-cockpit-wet-bar-moulded-white-15-1600.webp
- Sea Ray 310 Sundancer: sea Ray script logo embossed on a white moulded panel: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-script-logo-moulded-white-upholstery-16-1600.webp
- Sea Ray 310 Sundancer: saloon looking forward past the galley to curved seating and forward double berth: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-saloon-forward-past-galley-hob-17-1600.webp
- Sea Ray 310 Sundancer: built-in microwave set into cream galley cabinetry: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-microwave-fitted-cream-galley-cabinetry-18-1600.webp
- Sea Ray 310 Sundancer: galley counter with two-burner hob, microwave and under-cabinet lighting: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-galley-worktop-two-burner-hob-19-1600.webp
- Sea Ray 310 Sundancer: galley with hob, sink, microwave above and black-fronted unit below: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-galley-hob-sink-microwave-cream-20-1600.webp
- Sea Ray 310 Sundancer: forward double berth with wall-mounted television and curved saloon seating: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-forward-double-berth-wall-mounted-21-1600.webp
- Sea Ray 310 Sundancer: flat-screen television mounted on bulkhead beside the forward berth: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-flat-screen-television-mounted-bulkhead-22-1600.webp
- Sea Ray 310 Sundancer: round wooden saloon table with inlaid pattern among cream upholstered seating: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-round-wooden-saloon-table-inlaid-23-1600.webp
- Sea Ray 310 Sundancer: curved cream saloon seating wrapped around a round wooden table: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-curved-cream-saloon-seating-around-24-1600.webp
- Sea Ray 310 Sundancer: black-fronted fridge beneath a vent in cream cabinetry: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-counter-fridge-dark-door-below-25-1600.webp
- Sea Ray 310 Sundancer: enclosed heads compartment with marine toilet, sink, mirror and shower curtain: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-enclosed-heads-marine-toilet-sink-26-1600.webp
- Sea Ray 310 Sundancer: aft cabin double berth beneath the cockpit sole, with cream upholstery: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-aft-cabin-double-berth-tucked-27-1600.webp
- Sea Ray 310 Sundancer: engine bay viewed from above showing twin diesel engines side by side: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-open-engine-bay-twin-diesel-28-1600.webp
- Sea Ray 310 Sundancer: close view of one diesel engine with yellow filler cap and hoses: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-diesel-engine-yellow-oil-cap-29-1600.webp
- Sea Ray 310 Sundancer: diesel engine in the engine bay with hoses and wiring alongside: https://photos.yachts.co/listing-photos/sea-ray-310-sundancer-051181/sea-ray-310-sundancer-second-diesel-engine-bay-wiring-30-1600.webp

Updated 2026-10-26. Prices and availability can change; please confirm with the broker.

Disclaimer: YACHTS.CO INTERNATIONAL LTD offers the details of this vessel for sale but cannot guarantee or warrant the accuracy of the information contained in the specification or warrant the condition of the vessel or equipment. A buyer should instruct his agents, or surveyors, to investigate such details as the buyer desires validated. This vessel is offered for sale subject to no prior sale, price change, or withdrawal without notice.

VAT, CE and RCD: prices are as advertised for the seller. Unless the listing clearly says so, don’t assume a boat is VAT paid or that its price includes VAT. Boats first placed on the UK or EU market since 16 June 1998 generally have to comply with the Recreational Craft Directive (in Great Britain, the Recreational Craft Regulations 2017) and carry a CE or UKCA mark with a Declaration of Conformity. Before you buy, ask for and check evidence of the boat’s VAT status and RCD compliance, and take advice if it is to be imported or exported.

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