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10data points analyzed by Sailpages.com to compile this MEDUSA 25 buyer’s report
MEDUSA 25

MEDUSA 25

F1 Glass Dev. Ltd.πŸ‡¬πŸ‡§Β· Design: Marice Griffiths
from 1960
$1.0K – $2.6K est. annual maintenance
Catamaran / MultihullmonoMasthead SloopTwin/Triple
Eventide Owners Association (UK) β†—Eventide Owners Group (UK) β†—

Specifications

Hull

LOA24.5 ft
LWL18.75 ft
Beam8 ft
Draft2.5 ft
Displacement4,704 lb
Hull speed1.34·√LWL5.8 kn

About the MEDUSA 25

Sailpages Buyer's Take

The Medusa 25 is a rare, single-year production vessel designed by Marice Griffiths and built by F1 Glass Dev. Ltd.(UK) in 1960. With an unknown total hull count and a compact 24.5 ft LOA, it represents a unique snapshot of early fiberglass boatbuilding from the UK market.

Best for:
This boat suits coastal cruisers and weekend sailors who prioritize a very shallow 2.5 ft max draft for accessing tight anchorages and rivers. Its moderate comfort ratio of 22.24 suggests it is best suited for protected waters rather than heavy offshore passage-making.
Bluewater capability:
With a capsize ratio of 1.91 and a displacement of 4704.0 lb, the Medusa 25 is generally considered a coastal cruiser rather than a dedicated bluewater vessel, though its twin/triple keel design offers stability in shallow waters.
Comparables:
Comparable to other early 1960s UK-built 25-footers like the Contessa 26 or early O'Day models, though the Medusa's specific twin/triple keel configuration and Marice Griffiths design make it distinct. It shares the era's focus on simple masthead sloop rigs and modest displacement of 4704.0 lb.

Performance

Comfort22.2
Capsize1.91
SA/Disp14.6
Disp/Len319

Pricing

We don't have market pricing data for the MEDUSA 25 yet. If you own one, help other buyers β€” what did you pay for it? Reports build a community price estimate over time.

Estimated Cost of Ownership

Based on 24.5ft LOA. Actual costs vary by condition, usage, and local rates.

$/ft/mo
Annual Maintenance
$1.0K – $2.6K
Hull, rigging, sails, engine service
Annual Docking
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Annual Insurance
N/A
No price data available

Known Issues & Pre-Purchase Inspection

1 reported issues across 1 systems for the MEDUSA 25, compiled from owner reports in sailing forums and owner-association material.

1 major
Rudder1

Unlock the full inspection report

Thinking of buying a MEDUSA 25? This is an in-depth report on the faults this model is known for β€” so you know exactly what to check when you walk the boat. For the price of a coffee.

  • βœ“ All 1 specific issues β€” severity, symptoms & fixes
  • βœ“ Model-specific pre-purchase inspection checklist
  • βœ“ Downloadable PDF to take to your surveyor β€” yours to keep

One-time $2.99 Β· secure checkout by Stripe Β· instant access Β· 30 days online, PDF yours to keep

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Which engine powers your MEDUSA 25?

We haven't confirmed the engine for this model yet. If you own or know one, tell us β€” as owners report in, we build an accurate picture over time.

Already know your engine? Search all engines β†’ to find its exact parts.

Used sails that fit the MEDUSA 25

Checking eBay for sails sized to this boat's rig…