Mayflower 48/Stadel 48 Sailboat Review, Specs, and Listings

George Stadel Jr.·1979 – 1984·~42 hulls·Mayflower Boatyards (Taiwan)
Mayflower 48/Stadel 48 drawingBuilder drawing
Hull Type
Monohull · fin
Rig
Ketch
LOA
48' · 14.63 m
Disp.
37,000 lbs · 16,783 kg
First year
1979

The Mayflower 48—also sold as the Stadel 48 or Mariner 48—is a 48foot, Taiwanesebuilt ketch designed by George H. Stadel III in the late 1970s for serious offshore cruising. Fewer than 100 hulls were completed. With its documented CE Class A (Ocean) certification and heavydisplacement proportions, the boat was clearly intended for extended voyaging rather than weekend racing.

Measurements

Dimensions 01

Length Overall
48 ft
Length on deck
—
Waterline Length
39.17 ft
Beam
13.5 ft
Draft
5.67 ft
Maximum Headroom
—
Air Draft
—

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Skeg-Hung
Ballast
12,500 lbs (Iron)
Displacement
37,000 lbs
Water Capacity
—
Fuel Capacity
—

Rig & sails 03

Rigging Type
Ketch
Mainsail luff
49 ft
Mainsail foot
16 ft
Foretriangle height
53.7 ft
Foretriangle base
17.08 ft
Forestay Length (estimated)
56.35 ft
Sail Area
1,055 sqft

Calculations 04

Sail Area to Displacement Ratio
15.2
Ballast to Displacement Ratio
33.78
Displacement to Length Ratio
274.85
Comfort Ratio
42.71
Capsize Screening Ratio
1.62
Hull Speed
8.39 kn

Design and Construction

Mayflower Boatyards in Taiwan built the Mayflower 48 with a solid-fiberglass hull and deck. The keel is iron, as is the 568-liter fuel tank. Ballast is 34 percent of displacement, while a displacement-length ratio of 275 places the boat firmly in the “heavy cruisers” category.

A length-to-beam ratio of 3.56, along with a fin keel and skeg-hung rudder, gives the hull a moderate, seaworthy profile rather than a slender performance shape. Its capsize screening value of 1.62 and Motion Comfort Ratio of 42.4 reinforce the picture of a stable, load-carrying offshore hull. The CE Class A Ocean certification confirms the builder’s declared envelope for extended voyages in severe conditions.

Draft varies from 5.68 to 5.98 feet, depending on load. An immersion rate of about 1,841 pounds per inch indicates how heavily the boat settles as provisions and tankage come aboard. The wetted surface is roughly 559 square feet.

Rig, Performance, and Handling

The ketch rig carries 1,055 square feet of sail, producing a sail-area-to-displacement ratio of 15.20. That’s modest and consistent with a heavy-displacement cruiser designed to favor control and balance over outright acceleration.

The theoretical displacement-hull speed is 8.4 knots, while the calculated maximum speed is about 6.5 knots. Auxiliary power comes from a listed 72 hp Perkins 4.236 diesel, driving a fixed shaft for motoring when the wind fails.

Accommodations and Tankage

Below decks, the Mayflower 48 has two cabins, six berths, a galley, and a toilet facility. Like many boats of its era, the interior is finished in teak. The two-cabin arrangement suggests a private-owner cruising layout rather than a charter bunkroom, while the joinery reflects the period’s preference for a warm, traditional interior.

Fresh-water capacity is a generous 199 US gallons, supporting long stretches away from a dock or water catchment. Fuel capacity is listed as 568 liters in an iron tank.

Names and Production

Hulls 2, 3, 5, 7, 8, 9, 11, 14, 15, 16, and 17 were sold under the Mariner 48 name; the remaining boats carried Mayflower or Stadel badges. Fewer than 100 were built in total, making any example relatively scarce. The Mariner-numbered hulls form a small subset of the same Stadel design.

The Verdict

The Mayflower 48 is a heavily built, CE-certified ocean cruiser with a sensible ketch rig and a teak interior suited to long-term liveaboard use. Its modest sail plan and heavy displacement won’t win passages, but the numbers describe a stable, forgiving hull with serious tankage and a documented ocean rating.

Pros

  • Iron keel and solid-fiberglass hull and deck from a Taiwanese builder
  • CE Class A (Ocean) certification for extended offshore voyages
  • 199-gallon fresh water and 150-gallon iron fuel tank for long range
  • Ketch rig with a moderate SA/D of 15.20 for manageable offshore sail handling

Cons

  • Heavy-displacement hull with a calculated maximum speed of only 6.5 knots
  • Fewer than 100 built, so spares and familiarity with the model can be scarce
  • Modest performance envelope limits its appeal to speed-minded buyers

Similar sailboats

12 comparable designs · similar LOA, displacement & rig