UD-18

セーラビリティージャパンからの引用

私達はすべての人々が一人でセーリング出来るべきであるとの拘りを捨てていませんし、Libertyは十分な安全性と容易な操作性で誰もが一人でセーリングすることに対して最も偉大な平等主義者であると信じています。
しかし、引き続きボートの設計に駆られている私はそこにとどまっていることは出来ません。また、その上、私を新しいものに向かわせておく方がはるかによい、とみんな知っています、実際に大きなものがそれから出て来るかもしれません。
我々の新しいボートは非対称のスピンネーカーを持っていますので、他のものと違ったものになるでしょう。非対称と言う言葉からも判るように、３０３広幅シートのジブセールと大変良く似てセールのクリューをシートで結び、一方は伸縮性のへさきにつけられたガラス繊維で出来た筒から出されて広げる事が出来ます。ポールを片方から片方に変えることがありませんので、このタイプのスピンネーカーは真追手の風のときや風下マークへ向かう時には最も速くセーリングできるという訳ではありませんが、追手でのリーチングの時には、非対称のスピンネーカーは大きな力を発揮しますので、Universal１８（UD5.5）のようなハルが考えられています。
（ボートの長さは１８フィートもしくは５．５メーターです。）
スピンネーカーはセーリングの中に新しい次元を加えます。それがなければ安全装置はきわめて有効ですし、しかも、突風があれば傾きが大きくなるかあるいは同時に風に向かってしまいます。
しかしスピンネーカーを持っているとそういうわけには行きません。ボートに加わる力が大きすぎて、マストの先が水に浸かるまで横倒しになってしまうことは普通の事です。ディンギーと言う小舟ではいつでも起こることなのですが、UD18では、これはきわめて安全でしかも興奮と面白さを加える事になります。あなたは誤りを犯し、ボートの方向は突風によって変わってしまいます。其の後あなたは元の方向に戻すために努力しなくてはなりません。
これは主として舵を一枚しか持っていないボートで起こる出来事です。なぜなら一枚のラダーではボートが傾いた時に一枚の舵板では殆ど出てしまうからです。しかし、UD18では２枚の舵板を持っていますのでヒールをしてしまったときには風下側の舵板がより深く水の下になり効力を増やす事ができ、船の制御を其の時点でも充分できるのです。船はそのまま航海を続ける事が出来るのです。
もう一つの安全装置は、広い幅と船の全長に沿った中に浮力隊を持った幅広いサイドデッキです。
これはハーネスを付けている舵手は一時横倒しになってしまっても、センターラインに座っている限り水面からまだ高い位置にいてしかも乾いたままで居ることが出来ます。長くて重いセンターボードが自動的に傾きを修正し、水を自動的にコクピットの外に出してしまいます。
それで我々はU18nihaスピードを増すためのすべての装備を用意します。しかし、あなたは安全にこのボートを操船することができますし、より、便利なボートではきわめて危険なことでも落ち着いて満足していられるのです。勿論、あなたが安全で静かなセーリングを楽しみたいというのであればスピンネーカーは飛ばさないでください。
もう一つのU18の使い方は、これは競技用のボートのつもりで設計していますが、特別に２人の乗組員を乗せることが出来ますし、又一人でのセーリングが出来ますが手の機能が制限されている人は、スピンネーカーを使えません。又U18では３番目の人や小さな家族で乗るのに充分な余裕があります。

UD18
On November 8, 2005 Serge Jorgenson, the International Foundation of Disabled Sailing's (IFDS) president, announced:
"The IFDS is pleased to announce that the Equipment Evaluation Committee recommendation presented, accepted by the IFDS Executive Committee and endorsed by the IFDS Recognized National Authorities (RNA’s). The equipment used in the Two-Person Keelboat Event will be the UD-18, an Australian Mitchell/Bethwaite design."
The UD18 is the result of collaboration between B & B Technology and Innovation - Julian Bethwaite/Bethwaite Design in Australia and Argentinean naval architect, Martin Billoch, along with Access Dinghy's Chris Mitchell.
By combining 20 years of Bethwaite experience, research and technology and Mitchell's unique understanding and ideology of sailing for people with disabilities, the result is the innovative 'lead assisted skiff' (LAS), the UD18.
For Paralympic competition the UD18 will be a stict one design class with two sailors seated on the centreline.
Bethwaite, who also designed the Olympic class 49er skiff explained, 'The design evolved to be a 5.8m LAS, capable of carrying weight whilst maintaining a high level of performance and control, keeping the cost down and incorporating a range of interesting features that should allow easy stacking/containerisation, simple maintenance and general ease of use. The boat will be a challenge for able-bodied and disabled sailors alike. This boat has been designed from a performance basis, to offer scintillating, crisp and snappy response to sailors regardless of their ability/mobility.'

Mitchell, designer of Access Dinghies continued, 'The UD18 is very versatile and can be handled by a variety of crew configurations. The helmsman can transfer manually and be steering with tillers, or be in a fixed seat on the centreline using a manual joystick, push/pull rods, or a servo assist joystick with full control of all functions. The forward crew can either be on the centreline, transferring manually, or using a swinging seat. Or both crew could be mobile - even riding trapeze. As its name says, the UD18 is of Universal Design and can be sailed by all levels of physical ability.'

Specifications
Metric
Imperial

Length
LOA - 5.8 m
LWL - 5.5 m
LOA - 19 ft.
LWL - 18 ft.

Beam
2.3 m
7.55 ft.

Draft
1.7 m
5.57 ft.

Weight
Hull - 125kg
Keel - 155kg (140 kg lead)
Hull - 275lbs
Keel - 342lbs (308lbs lead)

Displacement 550 kg. (incl. 250kg for 2 sailors and their personal gear) 1212lbs. (incl. 551lbs for 2 sailors and their personal gear)
Mast
7.2 m above deck
23.6 ft.above deck

Sail Area
Main - 10.64m2 (Reefed to 8.3m2)
Jib - 4.78 m2
Spinnaker - 20.78 m2
Main - 114.5 sq.ft (Reefed to 89.3 sq.ft)
Jib - 51.5 sq.ft.
Spinnaker - 223.7 sq.ft.

Sail Plan
Sloop rig with high roach. Auto de-powering, fully battened mainsail. Self-tacking, reefable jib. Tube launched asymmetric spinnaker on carbon fibre pole.
Seating
2 x Adjustable fibreglass centreline seats

Steering
Standard - Manual joystick
Optional - Push/pull or Servo Assist

- Hull has sufficient positive buoyancy (600 litre).

- Twin rudders maintain exceptional directional control even when heeled.
- Cockpit is self-draining.
- Flaired topsides give exceptional stability.

- Wide side-decks provide considerable buoyancy in extremem conditions.

Reefing
- Mainsail has slab reef.
- Jib has roller reefing providing 100% to zero sail area.

Construction is 8mm PVC foam sandwich with bi-directional glass and polester resin.

Colour
Hull - Dove Grey
Sails - Clear Mylar
Spinnaker - Coloured

Manual Controls
- Joystick or push/pull lines.
- Cleat console for easy sheet control.
- A single speed sheet type winch for easy halyard tension, mainsail reefing line tension and keel handling.

Servo Assist Controls and Winches for:
- Helm (variable speed optional)
- Main sheet
- Jib Sheet
- Boom vang and cunningham
- Spinnaker sheets
- Spinnaker Halyard (up and down)

Servo Controllers include:
- A wide variety of electonic joystick configurations to suit sailors with all types of disability.
- Sip & Puff
- A wide variety of secondary control switches.
Launching - Has lifting lugs for easy launching by cranes, or is easily trailer launched at a boat ramp.
Ventilator and personal equipment compartment optional.
Extremely comfortable, nimble and above all great fun and exciting.

Photos
Click on image for larger view
Comfortable sailing for two.
Centreline seating configuration
Extremely stable
Control line console and halyard winch
Trailerable and easily launched from ramp.

ISAF, Singapore, 07 November 2005

The International Foundation for Disabled Sailing (IFDS) AGM took place today at the end of the YES Asia Conference at the Changi Village Hotel, Singapore. It was decided that the equipment used in the new Two-Person Paralympic event will be the UD-18, whilst two new Vice-Presidents were elected to the IFDS Executive Board

From the four nominations received, Carl-Gustaf FRESK (SWE) and John TWOMEY (IRL) were elected to the Executive Board. More information on the new Vice-Presidents can be found by clicking on their names.

Over the past six months, a team of athletes, industry professionals and respected doctors conducted an extensive equipment evaluation of three boats nominated by RNAs. IFDS recognizes and appreciates the cooperation, interest and efforts of all of the boats and manufacturers.

The Equipment Evaluation Committee recommendation was presented at the AGM today, accepted by the IFDS Executive Committee and endorsed by the IFDS Recognized National Authorities. The equipment used in the Two-Person event will be the UD-18, an Australian Mitchell/Bethwaite design.

The UD-18
© ISAF
The UD-18 is a lead-assisted skiff with similar lines to the, 29er or 49er. With a tube-launched asymmetrical spinnaker and a modified 29er rig, the boat promises to be an exciting addition to World and Paralympic Competition. Able-bodied and disabled athletes alike will enjoy this platform - and more severely disabled sailors will welcome the ability to compete on an equitable level.

Both of the crew of this class will be disabled and will be comprised of at least one female. One of the crew will be classified with an IFDS International Classification 1. The Functional Classification System for the Two-Person Keelboat was recommended by the IFDS Medical Committee, Endorsed by the IFDS Executive Committee and Approved by the IFDS Members (RNA’s) during the AGM and will be distributed promptly to enable countries to compile the crews.

Website Links
IFDS YES Asia Conference
ISAD Disabled Sailing microsite