Cape Yachts Brokerage - Featured Boats "The Floss"
- Conor Symonds
- May 11
- 3 min read
The Floss — A Rare 1937 Humber Keel with Nearly 90 Years of Working Heritage
There are historic boats, and then there are vessels like The Floss — ships that carry the character, craftsmanship, and industrial story of Britain’s waterways in every rivet and plate.
Built in 1937 by the respected J.S. Watson yard in Gainsborough, The Floss is an original iron-hulled Humber Keel, a class of vessel that once formed the backbone of trade across the Humber estuary and inland waterways of Yorkshire and Lincolnshire. These boats were designed to carry cargo where larger coastal ships could not reach, navigating rivers, drains, canals, and tidal waters with remarkable versatility.
Today, surviving examples are increasingly rare — especially vessels that still retain such authenticity and working-boat presence.
Built for the Working Humber
During her commercial life, The Floss worked the waterways transporting grain between Hull and Gainsborough for Spillers Foods, part of the vast industrial network that once depended on vessels exactly like this one.
Her iron construction reflects the transition period of British cargo craft, when traditional timber keels gradually gave way to iron and steel hulls during the late 19th and early 20th centuries. Humber Keels were known for their bluff bows, flat bottoms, and incredibly strong hulls built to withstand shallow waterways and heavy cargoes.
At approximately:
76ft length overall
17ft beam
2.4m (8ft) draft
The Floss possesses the unmistakable proportions of a true commercial keel — broad, purposeful, and immensely capable.
Gardner Power — The Heart of the Vessel
One of the standout features aboard The Floss is her inbuilt Gardner diesel engine.
Among historic boat enthusiasts, Gardner engines are regarded with near legendary status thanks to their reliability, engineering quality, fuel economy, and unmistakable sound. Built in Manchester by L. Gardner & Sons, these engines earned a reputation across marine, transport, and industrial sectors for running virtually forever when properly maintained.
For many traditional boat owners, the Gardner engine is as desirable as the vessel itself — not simply machinery, but part of Britain’s engineering heritage.
A Vessel with Presence
What immediately stands out about The Floss is her sheer authenticity.
Unlike many converted barges that have lost their original identity, this vessel still feels unmistakably like a working Humber Keel. The long iron hull, traditional lines, engine room character, and industrial detailing create an atmosphere impossible to replicate in modern builds.
Whether viewed as:
a preservation project,
a liveaboard opportunity,
a promotional or hospitality venue,
or simply a collector’s historic vessel,
The Floss offers enormous potential while already possessing the thing money cannot easily buy: genuine provenance.
Inside the Walkaround
A detailed video walkaround of The Floss gives a rare opportunity to appreciate the scale, layout, machinery, and atmosphere of this historic craft in depth.
View the full walkthrough here on our YouTube page:
The footage captures the vessel’s imposing proportions, traditional construction, and the remarkable character that only a true working keel can deliver.
Preserving a Vanishing Piece of British Waterway History
The Humber Keel once dominated commercial traffic throughout the Humber region and connected waterways, but very few survive today. The decline of waterborne freight and the move to road transport saw many scrapped or lost entirely through the mid-20th century.
That makes vessels like The Floss increasingly important — not only as boats, but as surviving examples of Britain’s industrial and maritime heritage.
For the right owner, The Floss is more than a purchase. It is custodianship of a remarkable historic craft with nearly ninety years of story behind her — and many more still ahead.
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