Glass Slipper 50 Information, Review, Specs

Glass Slipper 50 Drawing
Make
Glass
Model
Slipper 50
Builder
Tyler Mouldings
Designer
E. G. van de Stadt
Number Built
Production Year(s)
1960 - ??

The Glass Slipper 50 represents a significant, though rarer, evolution of the foundational partnership between the Tyler Boat Company and the pioneering Dutch naval architect E.G. Van de Stadt. While the original "Glass Slipper" launched in the early 1960s was a 28-foot masthead sloop—famous for being one of the first successful production fiberglass yachts—the 50-foot variant scaled this philosophy into the realm of true blue-water heavy displacement cruisers. Built during an era when fiberglass laminates were applied with a "more is better" philosophy to ensure structural integrity, the Glass Slipper 50 stands as a testament to the robust construction methods that Edward Tyler transitioned from the prefabricated housing industry to the marine world.

As a vessel molded by the Tyler Boat Co., the hull and deck were typically supplied as high-quality GRP (Glass Reinforced Plastic) shells. Because Tyler frequently sold these components to be finished by other professional yards or high-end amateur builders, no two Glass Slipper 50s are identical in their final fit-out, though they all share the distinct, seaworthy lines characteristic of Van de Stadt Design.

Sailing Performance & Handling

The sailing characteristics of the Glass Slipper 50 are defined by its high displacement and a hull form designed for ocean-crossing stability rather than light-wind agility. With a long fin keel or encapsulated full keel (depending on the specific iteration of the mold) and a protected skeg-hung rudder, the boat tracks with exceptional reliability. This directional stability is a hallmark of Van de Stadt’s offshore designs, allowing the yacht to maintain its course in heavy following seas with minimal helm fatigue.

In terms of handling, the Glass Slipper 50 feels "stiff" and secure. It requires a decent breeze to get the hull moving—typically 12 knots or more—but once it gains momentum, its mass provides a comfortable, predictable motion that minimizes the "hobby-horsing" often found in lighter, modern production boats. Most examples were rigged as ketches or cutters to break down the large sail area into manageable sections for a shorthanded crew. While it lacks the pointing ability of a racing yacht, its ability to "shoulder aside" a chop makes it a preferred choice for long-distance voyaging where sea-kindliness is prioritized over VMG (Velocity Made Good).

Interior Comfort & Variations

The 50-foot hull provides a cavernous interior volume that was revolutionary for its time. Because Tyler Boat Co. often provided the hulls for secondary finishing, the layout variations are extensive. However, most Glass Slipper 50s utilize the length to offer a traditional "tri-cabin" layout: a spacious master cabin aft (often accessible via a walkthrough gallery), a large central saloon, and guest V-berths forward.

The headroom is generally excellent, often exceeding 6'4" in the main saloon, reflecting the boat's Northern European design origins. Use of heavy timbers—typically teak or mahogany—is common in the interiors of boats from this era, contributing to a warm, "ship-like" atmosphere. The wide beam carried well aft allows for a proper navigation station and a sea-galley that remains functional even at high heel angles. Owners often highlight the immense storage capacity under the cabin soles and behind the settees, a direct benefit of the deep-chested hull design.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a Glass Slipper 50 with an understanding of mid-century GRP construction. While the hulls are nearly "bulletproof" in thickness, they are not immune to the passage of time.

  • Osmotic Blistering: Early Tyler hulls, while structurally massive, used orthophthalic resins which are more prone to osmosis than modern vinylesters. A thorough moisture meter test of the hull below the waterline is essential.
  • Deck Core Integrity: Tyler often used balsa or plywood coring for the decks to add stiffness. If deck hardware (cleats, stanchions) was not re-bedded over the decades, water ingress can lead to localized soft spots and delamination.
  • Rigging and Chainplates: On a 50-foot boat of this age, the original stainless steel chainplates may be reaching the end of their fatigue life. Given that these are often glassed into the hull structure, inspection for "bleeding" or crevice corrosion is critical.
  • Engine Access and Maintenance: While the engine rooms are typically large, the age of these vessels means many have undergone repowering. Ensure that the cooling systems and exhaust runs have been modernized to meet the needs of contemporary diesel engines.

Community & Resources

The legacy of the Glass Slipper 50 is maintained by a niche group of enthusiasts dedicated to classic GRP cruisers. Technical support and historical documentation can often be found through the Van de Stadt Design office, which still provides support for their legacy designs. Additionally, the Ohlson and Tyler owner communities often cross-pollinate, as the construction techniques used on the Glass Slipper 50 are identical to those found on the more common Ohlson 38 and Rebel 41.

The Verdict

The Glass Slipper 50 is a "tank" of the high seas, offering a level of structural confidence that is difficult to find in contemporary lightweight designs. It is an ideal platform for a couple or family looking to undertake a circumnavigation on a budget, provided they are willing to invest in the maintenance of an older hull.

Pros:

  • Incredible structural integrity and "over-built" GRP lamination.
  • Exceptional directional stability and comfort in heavy weather.
  • Massive interior volume with significant customization potential.
  • Timeless aesthetic designed by a master of naval architecture.

Cons:

  • Sluggish performance in light airs (under 10 knots of wind).
  • Potential for osmotic blistering typical of 1960s/70s resins.
  • High maintenance requirements for aged systems and brightwork.
  • Large displacement makes it difficult to maneuver in tight, modern marinas without a bow thruster.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x —
Ballast
-
Displacement
36000 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
48.33 ft
Waterline Length (LWL)
35.43 ft
Beam
12.73 ft
Draft
8.2 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
1172 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
17.2
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
361.36
Comfort Ratio
47.82
Capsize Screening Formula
1.54
Hull Speed
7.98 kn