The Oxford 400 is a quintessential British dayboat, designed for sailors who prioritize traditional aesthetics and "picnic-style" versatility over modern racing performance. Originally manufactured by the now-defunct Oxford Boat Company, the 400 was built as a 4.0-meter (approximately 13-foot) open dinghy featuring a clinker-effect GRP hull. This design choice mimics the look of traditional overlapping wooden planks while providing the durability and low-maintenance benefits of fiberglass. The Oxford 400 was part of a tiered lineup of similar traditional dayboats, which included the smaller Oxford 350 and the more commodious Oxford 450, all sharing the same design language of high-gloss wood trim, bronze fittings, and steady, predictable hull lines.
Oxford 400 Information, Review, Specs

- Make
- Oxford
- Model
- 400
- Builder
- Oxford Boatyard Co.
- Designer
- Robert G. Henry Jr.
- Number Built
- Production Year(s)
- 1946 - ??
Sailing Performance & Handling
The Oxford 400 is characterized by its high initial stability and "heavy" feel relative to its size, which provides a sense of security for families and less experienced sailors. Unlike lightweight racing dinghies that require constant hiking to remain upright, the 400 uses its generous beam and hull volume to resist heeling. Most models were equipped with a gunter rig—a configuration where a short mast is supplemented by a vertical yard—which keeps the spars short enough to be stowed within the length of the hull for easy trailering.
On the water, the boat is not a "plane-on-command" vessel; instead, it tracks reliably and handles chop with more grace than a flat-bottomed boat due to its rounded sections. Technical specifications from historical manufacturer data indicate that while the sail area is modest, the boat performs admirably in light-to-moderate breezes. In higher winds, the boat remains manageable, though its weight becomes apparent when attempting to row or maneuver in tight quarters without a small outboard motor. The inclusion of a centerboard allows for decent upwind performance, though it is primarily designed for gunkholing and coastal exploration rather than technical windward-leeward racing.
Known Issues & Buyer’s Checklist
Prospective buyers should approach the Oxford 400 with a focus on structural integrity and the condition of the brightwork, as these boats were often prized for their "shined-up" appearance.
- Wood-to-GRP Interfaces: The Oxford 400 frequently features extensive teak or mahogany trim along the gunwales and thwarts. Over time, the sealant between the wood and the GRP hull can fail, leading to localized moisture retention. Inspect the underside of the gunwales for signs of wood rot or "soft spots" where the trim is through-bolted.
- Centerboard Pivot and Trunk: The centerboard is a heavy component; the pivot pin and the trunk itself should be inspected for stress cracks. Because these boats are often beach-landed, the leading edge of the centerboard and the rudder blade frequently show impact damage or gelcoat chips.
- Floorboard Condition: Original models often used marine plywood floorboards. These are prone to delamination if left in standing water at the bottom of the hull. Check for "sponginess" underfoot, which indicates the core of the boards has compromised.
- Gunter Rig Hardware: The sliding "gooseneck" or yard-to-mast attachment point on the gunter rig is a high-friction area. Inspect for wear on the mast or bending in the hardware, which can make raising and lowering the mainsail difficult.
The Verdict
The Oxford 400 is an elegant, sturdy dayboat that excels as a platform for relaxed afternoons on the water. While it lacks the speed of contemporary fiberglass dinghies, its classic lines and robust construction make it a standout choice for those who view sailing as a leisure activity rather than a sport.
Pros
- Aesthetic Appeal: The clinker-effect hull and wood trim offer a "classic boat" look without the maintenance of a full wooden hull.
- Stability: A wide beam and substantial hull weight make it an exceptionally safe platform for children and pets.
- Versatility: Designed to be sailed, rowed, or powered by a 2–4 hp outboard motor.
- Transportability: Short spars and a manageable weight (for its class) allow for easy towing behind a standard passenger vehicle.
Cons
- Limited Performance: Its heavy displacement and traditional rig mean it will be easily outpaced by modern designs like the Wayfarer or Laser.
- Maintenance: The extensive wood trim requires regular varnishing to maintain its appearance and structural integrity.
- Weight on Land: While stable on the water, it is significantly heavier than a standard 13-foot dinghy, making it difficult for one person to launch or recover on a steep ramp without a dedicated trailer winch.
Measurements
Construction & Hull
- Construction Material
- Wood
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x —
- Ballast
- 3800 lbs (Iron)
- Displacement
- 8400 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 28.83 ft
- Waterline Length (LWL)
- 22.5 ft
- Beam
- 8.33 ft
- Draft
- 4.5 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- 36 ft
- E (Main Foot)
- 15.25 ft
- I (Foretriangle Height)
- 31.95 ft
- J (Foretriangle Base)
- 10.5 ft
- Forestay Length (est)
- 33.63 ft
- Sail Area
- 442 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 17.11
- Ballast / Displacement Ratio
- 45.24
- Displacement / Length Ratio (D/L) Ratio
- 329.22
- Comfort Ratio
- 31.59
- Capsize Screening Formula
- 1.64
- Hull Speed
- 6.36 kn