Eagle 27 Information, Review, Specs

Eagle 27 Drawing
Make
Eagle
Model
27
Builder
US Yachts
Designer
Maclear & Harris
Number Built
Production Year(s)
1963 - 1967

The Eagle 27 stands as a testament to the cross-border collaboration that defined the North American fiberglass revolution of the late 1960s and early 1970s. Designed by the prolific Alex McGruer and manufactured by the pioneering Canadian firm Grampian Marine, the Eagle 27 was marketed primarily through Eagle Yachts of New Jersey. It occupies a unique niche in the cruiser market, often described as an evolution of the widely successful Grampian 26. While it shares much of the robust DNA and the "maximum volume" philosophy of its Grampian siblings, the Eagle 27 offered a slightly more refined aesthetic and a cabin layout intended to appeal to the growing American family cruising market.

As noted in the Grampian Owners Marina history, the vessel was part of a production era where Grampian Marine was operating at its peak, leveraging its expertise gained from building US Yachts and O'Day designs. The Eagle 27 is a masthead sloop characterized by its sturdy fiberglass layup, a conservative fin keel, and a spade rudder. While many contemporary designs of the early 70s were shifting toward lighter, racing-oriented hulls, the Eagle 27 remained firmly committed to the "pocket cruiser" ethos, prioritizing safety and internal accommodations over outright speed.

Sailing Performance & Handling

The Eagle 27 is widely regarded as a "stiff" and forgiving boat, a characteristic largely attributed to its healthy ballast-to-displacement ratio. With approximately 40% of its weight concentrated in the keel, the boat handles gusty conditions with minimal heel, providing a sense of security for novice sailors and families. According to technical documentation curated by the Grampian Owners Marina, the boat features a high-aspect-ratio rig that allows it to point reasonably well for a coastal cruiser, though its relatively heavy displacement—nearly 6,500 pounds—means it requires a decent breeze to truly come alive.

In light air, the Eagle 27 can feel somewhat sluggish, especially when compared to lighter modern designs. However, once the wind hits 10 to 12 knots, the hull finds its stride. The spade rudder provides responsive steering, though owners often note that the boat can develop significant weather helm if the mainsail is not reefed early. Its tracking is reliable, making it a comfortable choice for short-handed coastal hops or overnight trips across larger lakes like Lake Ontario, where many of these hulls were originally campaigned.

Interior Comfort & Variations

One of the primary selling points of the Eagle 27, and a hallmark of Alex McGruer’s designs, is the surprising amount of interior volume packed into a 27-foot hull. McGruer was a master of maximizing "living space per foot," a trait most famously seen in the Grampian 26, which offered six feet of headroom—a rarity for its size at the time. The Eagle 27 continues this trend, providing a bright, airy cabin that feels significantly larger than its dimensions suggest.

The layout typically features a traditional V-berth forward, followed by a marine head (often with a hanging locker opposite). The main salon utilizes a combination of a settee and a dinette that can be converted into additional sleeping berths. Because the Eagle 27 was often built to the specific requirements of Eagle Yachts, the interior joinery and upholstery were occasionally upgraded compared to the standard "Plain Jane" Grampian models. The galley is usually located aft, near the companionway, to ensure better ventilation and proximity to the cockpit. While the Grampian 26 was the more prolific sibling, the Eagle 27 is often sought after today for these slight upgrades in interior finish and its marginally more modern lines.

Known Issues & Buyer’s Checklist

Prospective buyers of an Eagle 27 should approach the vessel with an understanding of 1970s fiberglass construction techniques. While the hulls are generally "overbuilt" and thick, they are susceptible to the standard aging issues of the era.

  • Deck Delamination: Like many boats of this vintage, the Eagle 27 uses a balsa-cored deck. Moisture ingress around stanchion bases, cleats, and the mast step can lead to soft spots and core rot. A thorough percussion test of the deck is essential.
  • Bulkhead Attachment: There have been reports within owner circles of the fiberglass tabbing that secures the bulkheads to the hull coming loose over decades of hard use. This can compromise the structural rigidity of the hull and should be inspected behind the salon cabinetry.
  • Rudder Bearings and Post: The spade rudder is a potential weak point if the internal structure has absorbed water. Buyers should check for "slop" in the steering and any signs of weeping or rust at the rudder post entry.
  • Iron Ballast Maintenance: While most Grampian-built boats used encapsulated lead, some variants used iron. If the encapsulation is breached, the iron can expand and crack the fiberglass keel stub.

Community & Resources

The primary hub for technical data, historical brochures, and owner support is the Grampian Owners Marina. This organization maintains an extensive archive of Alex McGruer’s designs and provides a vital network for sourcing parts or advice on structural repairs specific to the Eagle and Grampian lines.

The Verdict

The Eagle 27 is an excellent entry-level cruiser for sailors who value stability and interior comfort over racing performance. Its robust construction and McGruer pedigree make it a reliable "good old boat" that remains relevant for coastal and lake cruising.

Pros

  • Exceptional interior volume and headroom for its length.
  • Stiff and stable performance in heavy air.
  • Robust fiberglass construction that handles aging well if maintained.
  • Active owner community for technical support.

Cons

  • Heavy displacement makes for sluggish performance in light winds.
  • Common vintage issues like deck delamination require careful inspection.
  • Spade rudder design is more vulnerable to debris than a skeg-hung rudder.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Full
Rudder
1x Attached
Ballast
-
Displacement
6000 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
27 ft
Waterline Length (LWL)
21.16 ft
Beam
8.33 ft
Draft
3.67 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

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

Calculations

Sail Area / Displacement (SA/D) Ratio
16.47
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
282.72
Comfort Ratio
24.03
Capsize Screening Formula
1.83
Hull Speed
6.16 kn