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What's the story here?

Haslar Marina is situated in Gosport, just inside the entrance to Portsmouth Harbour on the western side, opposite Portsmouth's Historic Dockyard. It lies within a naturally sheltered area of the harbour known as Haslar Lake and can be easily accessed directly from the harbour's Boat Channel. Part of the Boatfolk group of marinas, it is easily recognised by its iconic green lightship, "Mary Mouse II," which is visible from afar and functions as both a prominent landmark and a restaurant. Premier Marinas recently acquired the marina from the Boatfolk network and brought its stamp to the marina.




Haslar Marina offers 600 resident berths and up to 150 visitor berths, with rafting facilities available. It can accommodate vessels with drafts of up to 3.5 metres and LOAs of up to 70 metres. The approaches to the marina have a maintained depth of at least 4 metres CD.

Daily Visitor Berthing [2026]

Visitor Rates


• • 8.0m to 12.5m LOA: £4.35 per metre, per night


• • 12.6m to 16.0m LOA: £4.85 per metre, per night


• • 16.1m to 20.0m LOA: £5.10 per metre, per night


• • Over 20.0m LOA: Price on Application (POA)

Short-Stay Berthing (Up to 4 hours)


• • Vessels up to 15.0m LOA: £13.10 flat rate


• • Vessels 15.1m+ LOA: £19.30 flat rate

Premier Marinas has introduced a strict 8-metre minimum billing length for overnight stays across the network. If your vessel is less than 8 metres (approximately 26 feet), you will still be invoiced for a baseline 8-metre length (£44.00 per night in high season). 16-amp shore power is included in the visitor berthing fee, with a standard complimentary electricity credit for each stay. Excess usage is charged per unit. Visitor berths must be vacated by noon on your day of departure.




It is always advisable to contact the marina directly in advance to check for availability, especially during the high season. Visitors approaching the marina may reach out 24 hours a day, 365 days a year on Ch. 80/M [Haslar Marina], +44 (0)23 92 601201, haslar@boatfolk.co.uk, or through their web form . However, with numerous visitor berths and the possibility of accommodating yachts in the berths of resident berth holders who are away, berths are generally available. Only vessels over 15 metres or rallies need to book well in advance.

How to get in?

Coastal guidance, tidal guides, waypoints, and pilotage are available in Navigating Portsmouth Harbour . The Eastern Approaches to the Solent covers southern approaches, while inshore east/west approach guidance can be found in Southampton Water to Chichester Harbour .



Haslar Marina is situated on the west side of Haslar Lake, near the harbour entrance. It is entered by passing close north of Fort Blockhouse, which is at the east end of a small peninsula. There is no need to proceed to the Ballast Pile, as the marina may be approached directly from the Boat Channel, which may be freely entered and exited from its western side.




Haslar Lake, located between the Boat Channel, Haslar Marina, and the No. 1 Jetty, within the reserved Fort Blockhouse area, has a maintained depth of 6 metres.





Haslar Marina is protected by a northern wave screen that turns southward towards its prominent, permanently berthed lightship, the Mary Mouse II, positioned at its north-eastern corner. The highly visible green lightship, moored on the outer face of M Pontoon, makes the marina easily recognisable from a great distance. At night, lights are displayed from the wave screen's easternmost elbow Q.G., north of the lightship, and from the head of M Pontoon 2F.G (vert), just south of the bow of the lightship.




Berht as directed by the marina office. The marina's dedicated visitor berths are typically located immediately inside the lightship. They are accessed by passing around the head of M Pontoon immediately south and around the Lightship's bow. Vessels occupying the berth of an 'away' resident holder should follow directions from the marina office.

Why visit here?

Haslar Marina is named after Haslar Lake, which comes from the Old English words hæsel-ōra. In this context, hæsel refers to a hazel tree, while ōra means a bank, shore, or land by the water—particularly a riverbank or coastal edge. Therefore, hæsel-ōra translates to "hazel-bank," "hazel-shore," or "hazel-landing place." This name probably reflects either the abundance of hazel trees in the area or the historical practice of laying hazel branches over marshy ground near Haslar Creek to make the terrain more navigable and suitable for landing.




Haslar Lake itself is a tidal inlet that forms part of Portsmouth Harbour. It has played a vital role in the development of Gosport, serving as a natural harbour and landing site that enabled maritime activities crucial to the town's growth. Its sheltered waters supported shipbuilding, naval logistics, and commercial transport—key elements of Gosport's early economy, as noted in the Gosport Marina entry and in its connection to Portsmouth Harbour.




The area's strategic importance was recognised early on. In 1431, the first military fortification—now known as Fort Blockhouse—was built as a timber defensive tower to safeguard the harbour entrance. This followed the burning of Portsmouth during the Hundred Years' War and was authorised by King Henry VI. Additional fortifications were added in 1540, including a blockhouse and bulwark on the Gosport side of the harbour. These featured an iron chain that could be raised across the entrance to prevent enemy ships from entering.




Since 1753, a series of bridges has spanned Haslar Creek, enabling transport and connecting communities across the lake. This connectivity helped establish the Royal Hospital Haslar on its banks, built to care for Royal Navy sailors and to strengthen Gosport's role as a centre for naval medical support. Haslar Creek also served as a crucial site for defence and ship manoeuvring, boosting Gosport's strategic military importance.




The bridges over Haslar Creek facilitated the movement of goods and people between Gosport and its surrounding regions, promoting urban growth and social cohesion. Overall, the creek's navigable, sheltered waters, along with its medical and military facilities, played a key role in the development of Gosport into an important maritime and residential centre.




One unique feature of the marina is the convenience of dining in the vibrant green Mary Mouse II. Built in 1947, the 41-metre lightship once patrolled waters off Norfolk, the Humber, Outer Gabbard in the North Sea, Dover's Shipwash and other locations around the British Isles before being decommissioned in 1991. It was purchased by Dean & Reddyhoff Ltd for their Haslar Marina Project in 1993 and is now a restaurant Trinity's at the Lightship .




Open seven days a week, early until late, you'll find it hard to locate a better place to while away the hours, whether on their flight deck or downstairs in the bar. As a visitor to the marina, moored on an adjacent alongside berth, you can avoid the third-of-a-mile walk most people take to visit.




From a boating perspective, tucked into Haslar Creek, the marina is well sheltered from the prevailing wind, and a wave screen protects the northern end from wash coming from the busy fairway and the ebb tide. It is the first of two Premier sister marinas that lie side by side on the western shoreline. The adjacent Gosport Marina offers a fuel pontoon (gas, petrol, or diesel) and immediate, flat access to the Gosport Ferry terminal, which provides a direct crossing to Portsmouth's Gunwharf Quays. Haslar Marina's advantage is its slightly more protected basin layout, away from the ferry slipway traffic, and more convenient access to The Creek or The Lightship restaurants.




Gosport is easily accessible from the eastern side of The Solent, the east of the Isle of Wight, and Chichester Harbour. It benefits from excellent rail and road links, with good provisioning and plenty to keep a crew entertained ashore in case a significant low-pressure system threatens to disrupt a cruise. Its plentiful visitor berths and high-quality facilities and services make it an excellent base for exploring the city of Portsmouth, as detailed in the Gunwharf Quay entry.

What facilities are available?

All pontoon berths offer electricity and fresh water. Free Wi-Fi, a launderette, and a first-class ablutions block are available, along with a 24-hour gas bottle exchange service and full recycling facilities onsite. Haslar Marina does not have its own physical fuel pontoon. Self-service blackwater pump-out facility securely positioned on M Pontoon (accessible via token system with deep discounts for Premier berth holders). Fuel is available at the sister site, Gosport Marina, which sits right next door (just a few hundred yards north, up the same western shore of Portsmouth Harbour).

The marina grants the public access to its slipway in the overflow car park; there is no charge, but caution is advised when launching or recovering, especially at low tides, without a suitable four-wheel-drive vehicle. Trailers can be stored at the top of the slipway for up to 48 hours. The marina also features the Lightship Bar & Restaurant, Hardy's at Haslar, and Bar & Bistro.

Ashore, there are 20 on-site marine businesses, including sail, boatyard, and engineering specialists. The marina has a Sealift, a self-contained floating dry dock, with its Sealift2 capable of lifting vessels up to 65 feet and 50 tons in under 5 minutes.

Gosport High Street is a five-minute walk away, offering shops and banks. The Gosport Ferry provides quick access to Portsmouth Harbour railway station, the terminus of the Portsmouth Direct Line to London. A ferry service to and from Gosport operates every 15 minutes.

Usefull River Test Contacts
King’s Harbour Master, Portsmouth
Traffic co-ordination and regulatory control authority for shipping entering and leaving Portsmouth Harbour and the Eastern Solent.
[VHF]: Channel 11 (or Ch. 13 if instructed) [King's Harbour Master, Portsmouth]
+44 (0)23 9272 3124 | King’s Harbour Master

Boatyard & Refit Services
Haslar Specialized Powerboat Yard & Boatcare
High-pressure hull cleaning, GRP/gelcoat repairs, Coppercoat application, antifouling, topside polishing, seacock replacement, and basic rigging.
+44 (0)23 9258 4374 | haslar@boatcare.co.uk | Boatcare Haslar

SeaLift3 (Floating Dry Dock)
Safely lifts and holds boats of all types up to 19m long, 7.6m beam, and 3m draft out of the water in under 15 minutes, allowing fast hull spray-offs, anode checks, or rapid race-prep hull wipes without standard shoreside storage costs. Operations Manager: Paul Edmunds +44 (0)23 9258 4374 | SeaLift3

Ocean Electronics
Installation, service, and warranty fixes for Raymarine, Garmin, B&G, and onboard communication arrays. +44 (0)7901 821074 | info@oceanelectronics.co.uk | Ocean Electronics

Local Yacht Club
Haslar Yacht Club
A highly welcoming, on-site, independent club that promotes localised cruising in company, safety workshops, and vibrant shoreside social functions for both resident and visiting boaters. Because Haslar Yacht Club is a social cruising club run strictly by volunteer members for other boaters, they do not maintain a dedicated physical office phone line with fixed daily hours. secretary@haslaryachtclub.co.uk | Haslar Yacht Club

Dining Out
The Creek Restaurant
+44 (0)23 9400 2461 | +44 (0)7413 717063 | bookings@thecreekhaslar.co.uk | The Creek Restaurant

The Lightship Restaurant
+44 (0)23 9400 6170 | bookings@thelightshiphaslar.co.uk | The Lightship Restaurant


Emergency & Local Public Services
Police / Ambulance / Fire (Emergency): 999
Police (Non-Emergency): 101

Queen Alexandra Hospital (QA Hospital)
+44 (0)23 9228 6000 | Queen Alexandra Hospital

Doctors Surgery
+44 (0)23 9258 3344

Gosport Dental Centre
+44 (0)23 9252 5415

Alver Veterinary Group
+44 (0)23 9258 2991 | Alver Veterinary Group

Transport Services
Gosport Taxis
+44 (0)23 9252 2222 | +44 (0)23 9251 1111

First Buses
+44 (0)23 9258 6921

Gosport Ferry
+44 (0)23 9252 4551 | Gosport Ferry

Any security concerns?

A card issued to Permanent berth holders gains access to the car park and pontoons via a key card. Visitors use a numbered keypad system at the main pedestrian gate and an intercom system at all gates.

The marina is monitored continuously by CCTV and there are berthing staff in attendance 24 hours a day.

With thanks to:

eOceanic