1. History

2. Design
    Shearwater 201 

3. Specifications

4. References

The Seaflight Shearwater is a light amphibian aircraft, designed in the 1990s. A single example was built by Seaflight (NZ) and was for a time owned by Shearwater Aviation, who promoted the design.

History

The Shearwater Seaflight was designed by Bill Townson during the 1990s to fulfill a requirement for a four-seat amphibian. A series of 1/5th scale models were used to develop the design over a three-year period, with construction of a full-size machine beginning in 1997.

As ZK-SFA, the Shearwater was registered to Seaflight (NZ) Ltd of Warkworth, New Zealand and first flew in November 2001.

A second model, the Shearwater 201^[1] , was designed by Stephen Hoyle and Richard Roake^[2]. This was to be a next-generation 4 seat amphibian without the typical "boat hull" design amphibians use in an effort to reduce aerodynamic drag.^[3]

The aircraft subsequently changed hands and was re-registered several times, also appearing as ZK-TNZ owned by Shearwater Industries of Christchurch, then ZK-SFA again by Seaflight (NZ) and eventually to Shearwater Aircraft Ltd., based in Auckland.^[4] Shearwater Aircraft ceased trading in 2016, while the aircraft remains in private hands.^[5]

Design

The Shearwater is an amphibious light aeroplane of mainly fibreglass construction. Seating for four is provided in an enclosed cabin, above and behind which is mounted a pusher powerplant. To accommodate the propellor, the rear fuselage is cut down with an indented vee shaped upper profile, which blends smoothly into a V-tail. The planing hull is stabilised in the water by wingtip floats, while a wheeled undercarriage is hinged on either side of the hull and retracts upward and backwards into the wing root attachment fairings. A nosewheel retracts forwards.

The straight, mid-mounted wings attach to the hull behind the cabin and underneath the engine, and are removable for land transport. Downturned wingtips are faired into the stabilising floats on the Shearwater Seaflight along with the typical "boat hull" most amphibians use.

The Shearwater was originally powered by a PZL-developed variant of a 210 hp Franklin type.

Shearwater 201

The Shearwater 201 was proposed by Shearwater Aircraft as a next-generation kit, to become a certified aircraft at a later date. Differences between the 201 and the original model, or any amphibian, include the proposed use of a "hydroski" (a hydrofoil used to takeoff and land the aircraft in water) instead of a boat hull design. Engine options were to be either the Mistral G-300 Wankel type, mounted in pusher configuration, or a Price Induction Jet DGEN 390 jet engine. The kit was intended to have a construction time of 1000 man hours.^[6]

Specifications

Note: Engine and performance data may relate to the Shearwater 201.

|genhide=
|crew=1
|capacity=3 passengers
|length m=9.25
|length ft=
|length in=
|length note=
|span m=11
|span ft=
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|height m=
|height ft=
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|wing area sqm=
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|aspect ratio=
|airfoil=
|empty weight kg=910
|empty weight lb=
|empty weight note=
|gross weight kg=1482
|gross weight lb=
|gross weight note=
|max takeoff weight kg=
|max takeoff weight lb=
|max takeoff weight note=
|fuel capacity=
|more general=

|eng1 number=1
|eng1 name=Mistral G-300 (or Price DEGN 390 jet)
|eng1 type=Wankel engine
|eng1 kw=
|eng1 hp=300
|eng1 shp=
|eng1 kn=
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|power original=
|thrust original=
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|max speed kmh=456
|max speed mph=
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|max speed mach=
|cruise speed kmh=480
|cruise speed mph=
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|cruise speed note= {{convert|230|kn|mph}} indicated at {{convert|8000|ft}}
|stall speed kmh=107
|stall speed mph=
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|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|range km=4560
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|range note=with 45 minute reserve
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References

• Florentin-Daniel Nicolae
• Florentine Ariosto Jones
• Florentine biscuits
• Florentine (disambiguation)
• Florentine florin
• Florentine Ghetto
• Florentine in BDSM
• Florentine Junction
• Florentine mosaic
• Florentine Mulsant
• Florentine Picture-Chronicle
• Florentin Nicolae
• Florentino Castro Lopez
• Florentino Ibrain Morris Luís
• Florentino Luís
• Florentino López Cuevillas
• Florentino Maschera
• Florentino Torres
• Florentino à Kempis
• Florentin Seillière
• Florentio Maschera
• Florentius of Orange
• Florentius of Sardis
• Florentius of Strasbourg
• Florent Johan Malouda