Sailor · 2021–2026

David Koch

wir sind wir inclusion in sailing e v J/70

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Events: 7
Win rate: 0%
Podium rate: 14%
Typically beats: 31%
Best class ranking: #2898
Longest win streak: 4

Biggest lift: Jan Mense
Longest-running crew: Marvin Hamm
Nemesis: Lukas Feuerherdt
Rival: Niklas Rausch
Best day: 25 Oct 2025
Signature result: 2nd of 16

Partnerships · 8 sailors

Marvin Hamm · Bat Sailing Team, BAT Sailing Team, Blindfisch, WSW / BAT Sailing Team · J/70 6events 0 wins together · 1 podiums · 0% win rate · 4 of 50 races won Beat 39% of the fleet together · best 2nd · Sep 2021 – Jun 2026
Mieke Klein · Bat Sailing Team, BAT Sailing Team, Blindfisch, WSW / BAT Sailing Team · J/70 6events 0 wins together · 1 podiums · 0% win rate · 4 of 50 races won Beat 39% of the fleet together · best 2nd · Sep 2021 – Jun 2026
Jan Mense · BAT Sailing Team, Blindfisch, WSW / BAT Sailing Team · J/70 4events 0 wins together · 1 podiums · 4 events · 4 of 30 races won Beat 51% of the fleet together(+41 vs. without) · best 2nd · Jun 2024 – Jun 2026
Jessika Stiefken · Bat Sailing Team, Blindfisch · J/70 2events 0 wins together · 0 podiums · 2 events · 0 of 20 races won Beat 15% of the fleet together · best 30th · Sep 2021 – Jun 2022
Johannes Löschke · Bat Sailing Team, Blindfisch · J/70 2events 0 wins together · 0 podiums · 2 events · 0 of 20 races won Beat 15% of the fleet together · best 30th · Sep 2021 – Jun 2022
Alexander Tyssen · Bat Sailing Team · J/70 1events 0 wins together · 0 podiums · 1 events · 0 of 5 races won Beat 0% of the fleet together · best 19th · Mar 2022 – Mar 2022
Leon Tyssen · Bat Sailing Team · J/70 1events 0 wins together · 0 podiums · 1 events · 0 of 5 races won Beat 0% of the fleet together · best 19th · Mar 2022 – Mar 2022
Christiane Willim · Bat Sailing Team · J/70 1events 0 wins together · 0 podiums · 1 events · 0 of 5 races won Beat 0% of the fleet together · best 19th · Mar 2022 – Mar 2022

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

Rating history

Event history · 7

Date	Event	Boat	Class	Role	Finish
25 Jun 2026	Kieler Woche 2026	Blindfisch	J/70	Crew	29th / 42
25 Oct 2025	Mitteldeutsche Vereinsmeisterschaft (MDVM) 2025	Blindfisch	J/70	Crew	2nd / 16
26 Jun 2025	Kieler Woche 2025	WSW / BAT Sailing Team	J/70	Crew	31st / 56
27 Jun 2024	Kieler Woche 2024	BAT Sailing Team	J/70	Crew	33rd / 48
23 Jun 2022	Kieler Woche 2022	Blindfisch	J/70	Crew	30th / 39
19 Mar 2022	Frühjahrs-Verbandsregatta I	Bat Sailing Team	J/70	Crew	19th / 19
9 Sep 2021	Kieler Woche 2021	Bat Sailing Team	J/70	Crew	37th / 39

Ratings

Class	Rating	Rank	Impact
J/70 Crew	-126 provisional	#2898 band 2324–3219	−2.3
Full-size sailing Crew	-89 provisional	#59755 band 44404–67419	—

Rank among sailors with a substantial record, all time. In brackets, the ranks this rating cannot be told apart from. Impact is the points of fleet beaten that this sailor adds.

Helm and crew

As helm	0 events	0 wins	beats —
As crew	7 events	0 wins	beats 33%

How they race

Closer	±0 pts	last race of an event vs. the rest
Comeback	−7 pts	the race after a bottom-half finish
Big fleets	28%	of the fleet beaten

Head to head

Helm	Races	W–L
Lukas Feuerherdt	51	4–46
Julian Ramm	40	2–38
Sören Hadeler	36	8–27
Kai-Uwe Hollweg	35	3–32
Laurenz Kahl	34	9–25
Fernando Borja	31	11–19
Johnny Jensen	31	6–25
Ingo Binder	29	11–18
Heiko Schmidt	29	9–19
Bruno Czylwik	29	10–19
Michael Berghorn	26	3–23
Josse Bonatz	26	8–18

Most-beaten opponent: Leon Tyssen (25–1).

Seasons

Year	Events	Beat
2026	1	32%
2025	2	69%
2024	1	32%
2022	2	12%
2021	1	5%

Boats

Blindfisch · J/70 · 3 events · 2022–2026
BAT Sailing Team · J/70 · 3 events · 2021–2024
WSW / BAT Sailing Team · J/70 · 1 events · 2025

Where they race

Unknown · 7 events

Is this you?

Claim it to merge duplicates and remove results that aren’t yours. Changes apply at the nightly rebuild.

Crew rating, Full-size sailing: -89, #59,755. Compiled from public results; not an official ranking.