Neue Speedweltrekord, 50 Knoten NUN gefallen

Vorbehaltlich der Bestätigung des WSSRC:

Zitat

New World Record, and 50 knots falls! - unratified
Friday, September 19, 2008, Friday 4:59 PM
Just in - still to be confirmed by WSSRC officials, but we may have a new world record of 50.1 knots, set by Sebastian Cattelan in a brilliant early run. Rob Douglas set a scorching 49.9 knots, then Catman blew past on the very next run with 50.1 knots. Sjoukje Bredenkamp (ZA) has blasted her old record of 42.35 knots with a 45.1 knot run. Results still to be ratified on video records and adjusted for currents by WSSRC officials. Windsurfers now very, very hungry to get out there as ESF event organisers reset the course for high tide conditions. Bjorn Dunkerbeck comments that he is very confident of doing some sizzling runs this afternoon still.

Herzlichen Glückwunsch! Das war ja absehbar...

Wie ist das eigentlich, gelten Kiter nun als Segelfahrzeug? Auch rechtlich?

Habe gerade mal mit Bj?rn gesprochen. Er konnte morgens wegen der Gezeit nicht starten. Das Wasser war so dermaßen absolut flach, daß da gar keine Chance bestand. Nichtmal mit der allerkleinsten Finne die er hatte.
Müßte man jetzt mal in den WSSRC Statuten lesen, ob die 50cm Mindestwassertiefe schon gelten, die den Groundeffekt verhindern sollen. 50cm Wassertiefe war auf gar keinen Fall vorhanden...

Zitat von WSSRC

The WSSR Council announces an amendment to WSSR Rule 3.
3rd paragraph is amended as follows:

"For every record attempt on natural courses in every class, there must be a minimum depth of water, which is defined as follows.

At the time of the run in question, the shallowest part of the course must be covered by water with a depth of at least half the static immersed beam of the craft involved, or 10cm, whichever is the greater.

(Guidance note) To define the depth requirement, the craft or board involved should be afloat and the widest part of the hull or hulls touching the water should be measured. In the case of a multihull, the widest hull is measured or hydrofoil if fitted. In the case of an event involving a number of competing craft, the WSSRC Observer can announce at the commencement of the event what the minimum depth requirement will be"

Reason:

The WSSR Council had introduced the "50 cm minimum depth rule" after having commissioned an investigation from Southampton University's Wolfson Unit into the ramifications of "ground effect" on craft sailing in shallow water. This report had concluded that ground effect can indeed have a marked effect in reducing the drag of craft sailing in very shallow water, that it became significant at a depth factor of half the beam of a planing surface and that in general a minimum water depth of 50 cms would be more than deep enough to avoid this shallow water effect. In general, the sport had welcomed this ruling as it posed little or no practical problems.

Kitesurfers and Windsurfers however had a major difficulty in administering this new rule, to such an extent that it threatened to bring their attempts on records to a complete halt. These craft have traditionally used tidal courses, close to the shore since the 1980s, when the Weymouth Inshore course was established, Subsequent venues around the world - all verified by the WSSRC - had adopted this format of which the greatest advantage had been the ability to sail in smooth water. But by the physical nature of these courses and due to geographical and tidal effects, the depth of water varied considerably along the 500 metre length and thus complying with the 50cm rule overall could make it impossible to set courses, without ending up well out to sea, in conditions adverse to high speed.

All accept that "ground effect" exists and are unanimous that it should not be a factor in setting records. There was a danger that artificial courses might be created which could take advantage of this aid to higher speed but this was a separate issue which the WSSRC would address presently. However, in considering the Wolfson Report, the measurement at which ground effect came into effect was at half the beam of the board. As the average width of a board was 20 cms, it seemed reasonable to establish 10 cms as being the absolute minimum depth for natural courses - as opposed to manufactured courses - at the shallowest point.

John Reed
Secretary to the WSSR Council

Alles anzeigen

Zitat von Pat520i

Ist die Wassertiefe denn der Grund für die geringeren Geschwindigkeiten gewesen oder war mit mehr Wasser auch die Oberflächer nicht mehr so glatt? Hat er dazu was gesagt?

Hallo,

ja, das Wasser war deutlich ruppiger bei Flut. Aber morgens war es für ihn absolut undenkbar, aufs Wasser zu gehen. Absolut viel zu flach, selbst mit der kleinsten Finne...

Grüße

Th.

Jetzt ists passiert...

Zitat

Subject to WSSRC ratification, Sebastien Cattelan (FRA) has finally broken the magical 50 knots barrier, the holy gral of speed sailing. Accompanied by several high 49 knots runs from himself, Alexandre Caizergues and Jerome Bila (all France) he was the only sailor finally getting to 50.26 knots.

Special attendance was paid to the required water depth, and the organizer in cooperation with the WSSRC commissioner present clearly ensured that the rule was strictly applied.

Full details, pictures and reports can be found at www.luderitz-speed.com

Wahnsinn....

Bleibt zu klären, wie die Definition eines Segelfahrzeugs ist, ob ein Kite als Segelfahrzeug gilt oder als Fluggerät. Ich denke letzteres. das Versicherungsrecht geht ja auch in diese Richtung, m.W.

Ich werde den WSSRC mal kontakten...

Kann man sehen wie man will, es gab einige offiziell eingereichte Proteste gegen eine eventuelle Wertung als Weltrekord.

Beim WSSRC ist inzwischen auch angekommen, daß einige Länder Kiter als Fluggeräte einstufen.
Dazu gibt es eine weitere Nebenwirkung neben dem Groundeffekt, und zwar können Kiteboards kurzzeitig ähnlich einem Wasserski auf den letzten 100m den Speed stark ansteigen lassen. Also den Kite überholen, wie es Wasserskifahrer machen zur Beschleunigung, wenn das Motorboot zu einer Kurve ansetzt...