Proctor Eclipse Mk II Information, Review, Specs

Proctor Eclipse Mk II Drawing
Make
Proctor
Model
Eclipse Mk II
Builder
Newbridge Yachts
Designer
Ian Proctor
Number Built
Production Year(s)
1972 - ??

The Proctor Eclipse Mk II is a refined evolution of a mid-1960s design by the legendary British naval architect Ian Proctor. While the original 1965 version was primarily a wooden affair, the Mk II—produced in fiberglass by Newbridge Boats Ltd. starting in 1972—transformed the model into a successful production pocket cruiser. At 22 feet (6.71m), it was positioned as a high-performance alternative to the more utilitarian family cruisers of the era. The boat is distinguished by its semi-flush deck profile and a versatile lifting keel, making it an ideal choice for the tidal estuaries and shallow coastal waters of the United Kingdom.

Sailing Performance & Handling

True to the Ian Proctor pedigree, the Eclipse Mk II offers more "thoroughbred" DNA than many of its 1970s contemporaries. According to technical data from Yachting Monthly, the boat features a high-aspect, sporty rig—often a fractional sloop configuration—that allows for better upwind pointing and finer sail control. With a displacement-to-length (D/L) ratio of approximately 149, the vessel sits in the "light displacement" category, ensuring it is responsive in light airs and capable of quick accelerations that are rarely seen in heavier, traditional bilge-keelers like the Newbridge Navigator.

The handling is frequently described as "dinghy-like," a direct result of its low Comfort Ratio (approximately 12.1) and a relatively high Sail Area-to-Displacement (SA/Disp) ratio of 18.6. This makes the Eclipse Mk II a lively sail, though it requires more active trimming and attention to the helm than a sluggish cruiser. The lifting keel (which drops to a draft of 4ft 10in) provides significant lateral resistance and stability when fully deployed, while the 798-pound iron ballast helps the boat stand up to its canvas.

Interior Comfort & Variations

The interior of the Eclipse Mk II is a masterclass in utilizing limited volume. Despite its performance-oriented hull, the boat offers four berths in a standard layout: a V-berth forward and two quarter-berths or a convertible saloon arrangement. The semi-flush deck design maintains a low profile for aesthetic and aerodynamic reasons, which limits headroom to approximately 4 feet 9 inches (1.45m). While this prevents most adults from standing fully upright, it provides a cozy, functional living space for weekend coastal hopping.

Variations were a hallmark of the Newbridge production line. While the lifting keel version is the most prevalent—allowing the boat to be easily trailered and launched—a small number of fixed-fin keel versions were produced for owners who prioritized absolute stiffness and offshore stability. The Mk II introduced significant improvements over the Mk I, primarily in the use of glass-reinforced plastic (GRP) for the hull and deck, which replaced the maintenance-heavy wood of the original Proctor designs.

Known Issues & Buyer’s Checklist

Prospective buyers of this vintage GRP cruiser should focus their inspections on the following high-signal areas:

  • Lifting Keel Mechanism: The "drop keel" is a pivot or vertical lift system that can suffer from cable wear, pivot pin corrosion, or internal rust in the keel casing. Ensure the mechanism operates smoothly and inspect the trunking for stress cracks.
  • Bulkhead Tabbing: As with many early GRP boats from the Newbridge era, the fiberglass "tabbing" that secures the wooden bulkheads to the hull can delaminate over time. This can lead to structural flexing and rig tension issues.
  • Deck Core and Moisture: Check the semi-flush deck for soft spots, particularly around the mast step and chainplates. Water ingress into the core material is a common "gotcha" for boats of this vintage.
  • Windows and Seals: The original Perspex windows were often secured with early-generation sealants that are likely to have failed, leading to leaks that damage the interior woodwork.

Community & Resources

Owners of the Eclipse Mk II benefit from the support of the Newbridge and Venturer Owners Association, which serves as a repository for technical manuals, rigging guides, and historical context for the entire Newbridge fleet. This association is vital for sourcing advice on maintaining the Proctor-specific elements of the rig and the lifting keel system.

The Verdict

The Proctor Eclipse Mk II is a "sailor's cruiser," trading standing headroom for a rewarding, responsive experience at the helm. It remains one of the most affordable ways to own a design by Ian Proctor that can be trailered home for the winter.

Pros:

  • Excellent light-wind performance and responsiveness.
  • Versatile lifting keel allows for exploration of shallow creeks and easy trailering.
  • Renowned Ian Proctor design with enduring "classic" aesthetics.

Cons:

  • Limited headroom (4'9") makes extended stays cramped for tall sailors.
  • Requires more active management in heavy weather compared to heavier cruisers.
  • Potential for complex maintenance issues with the aging lifting keel system.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Lifting
Rudder
1x —
Ballast
798 lbs (Iron)
Displacement
2399 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
22.01 ft
Waterline Length (LWL)
19.32 ft
Beam
7.68 ft
Draft
4.49 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
186 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
16.6
Ballast / Displacement Ratio
33.26
Displacement / Length Ratio (D/L) Ratio
148.51
Comfort Ratio
12.18
Capsize Screening Formula
2.3
Hull Speed
5.89 kn