About us

about us

About Thornham Marina

Thornham Marina, nestled in a rural part of Chichester Harbour at the top of Prinsted Bay, is a delightful haven for boat owners. With 81 drying pontoon berths, 13 swinging moorings, it has additional berths within a gated deep water pool, which maintains a depth of 1.75m.

The marina offers annual berthing, storage ashore, winter packages, and short-term storage deals for boat owners based across the South Coast and London. Each pontoon berth has access to fresh water and electricity, as do all the shore berthing spaces throughout the yard.

The pontoon berths are popular with catamarans, motorboats, centreboarders, and vessels up to 12m in length and draw up to 1.2m or are happy to take the mud at low water. The marina and boatyard give excellent shelter for winter berthing and shoreside storage.

Our facilities

Thornham offers boaters a traditional marina experience with first class marina facilities, due to a programme of steady investment and renovation. The sheltered waters of Prinsted Bay readily opens out into the main body of Chichester Harbour, with the Solent beyond.

State of the art lifting facilities include a 12 tonne fully submersible boat lift made by Swede Ship, a Telescopic Merlo Telehandler for stepping/un-stepping masts and a Wise boat hoist. On-site an active marine community includes a fully-stocked, modern chandlery, cover and sail repairer, traditional shipwright, rigger, dinghy sales and multihull broker.

Our background

The marina site was purchased in September 2002 by Jonny Boys, now MD of the Trafalgar Group, with Marina Manager Jeanette Critchell joining the team in January 2004. With a strong family business ethos, her team includes daughter Courtney and husband Simon – who works for The Trafalgar Group.

The site which was in need of considerable refurbishment and renovation has since seen extensive upgrades. Brand new Walcon pontoons have been installed in the marina, a luxurious new shower block built, along with new offices and workshops for the marine tenants. A planning application is pending to build a new café facility.

Stay at Thornham

Introduced in 2019, the elegantly designed Ark 900 boats are available for hire. Custom built between Thornham Marina and Walcon Marine, the Arks are a totally unique boat, spacious enough to accommodate two people.


Marine Office opening times: 08:00 to 16:30 Tuesday to Saturday  
Closed Sunday and Monday

Tel: 02392 706 603

E-mail: info@thornhammarina.com

Thornham Marina
Thornham Lane, Prinsted, Nr. Emsworth, Hampshire PO10 8DD

Trafalgar Group
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© 2020 Thornham Marina, part of the Trafalgar Group of companies All rights reserved.
Thornham Marina - Thornham Lane - Prinsted - Emsworth - PO10 8DD | Company Registration Number 04529387 | Place of Registration England and Wales
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