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Sailor · 2015–2025

Gert-Jan Kos

catamaranvereniging hellecat A CatA-Cat FoilingHandicap

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Events
10

69 races · 1 race win

Win rate
0%

0% win rate · 0 of 10

Podium rate
20%

2 top-three finishes

Typically beats
44%

of boats faced (range 40%–48%, 374 boats)

Best class ranking
#40

Helm in A Cat · rating 175

Nemesis
Mischa Heemskerk

1–37 head to head in 40 races

Best day
21 Aug 2022

5-7-4-3 · Open Dutch Championship A-Cat

Signature result
2nd of 12

Klasse event A-Cat · A-Cat Foiling · 1 Jul 2023

Partnerships · 1 sailors

  • Wiro Zijlmans · Wiro ZIJLMANS · Formula 18 1events 0 wins together · 0 podiums · 1 events · 0 of 10 races won Beat 20% of the fleet together · best 134th · Jul 2015 – Jul 2015

Lift shows how much better this sailor finishes with that partner aboard.

Rating history

0148296202320242025Helm rating, all classes

Event history · 10

DateEventBoatClassRoleFinish
11 Oct 2025Ronde Tiengemeten 2025Gert-Jan KOSHandicapSkipper29th / 43
6 Sep 2025A-Cat class event SeptemberGert-Jan KOSA CatSkipper5th / 13
17 May 2025A-Cat class event MayGert-Jan KOSA CatSkipper5th / 10
12 Oct 2024Ronde Tiengemeten 2024Gert-Jan KOSHandicapSkipper2nd / 9
9 Sep 2024A-Cat World Championship 2024Gert-Jan KOSA-Cat FoilerSkipper26th / 84
1 Jul 2023Klasse event A-CatGert-Jan KOSA-Cat FoilingSkipper2nd / 12
19 Aug 2022Open Dutch Championship A-CatGert-Jan KOSA CatSkipper8th / 27
9 Jul 2022A-cat Class eventGert-Jan KOSA-Cat FoilingSkipper5th / 10
14 May 2022A-CAT Class eventNaA-Cat FoilingSkipper4th / 9
14 Jul 2015F18 World Championship 2015Wiro ZIJLMANSFormula 18Crew134th / 167

Helm rating across all classes: 296, #10,220.Crew rating across all classes: -20. Compiled from public results; not an official ranking.