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Sailor · 2014–2025

Vivian Bonsager

university of hawaii College fleet racingCollege team racingOptimist

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Events
53

740 races · 130 race wins

Win rate
11%

11% win rate · 6 of 53

Podium rate
57%

30 top-three finishes

Typically beats
60%

of boats faced (range 57%–63%, 802 boats)

Best class ranking
#736

Helm in College fleet racing · rating 458

Longest win streak
8

race wins in a row

Most successful partnership
Mercy Tangredi

4 wins · 17 podiums in 23 events together · 17% win rate

Best trio
Mercy Tangredi & Taylor Ledgerwood

2 wins · 8 podiums in 10 events, all three aboard

Biggest lift
Arden Rathkopf

+23 points of fleet beaten when sailing together

Longest-running crew
Morgan Carew

Feb 2022 – May 2025 · 26 events

Nemesis
Vanessa Lahrkamp

32–186 head to head in 218 races

Rival
Kay Brunsvold

43–53 in 96 races

Best day
20 Jan 2024

2-DNF-2-3-1-7-6-3-4-2-9-2-2-2-5-1-10-3-4-2-1-1 · Peter Wenner Rainbow Invite

Signature result
2nd of 18

Peter Wenner Rainbow Invite · College fleet racing · 18 Jan 2025

Partnerships · 43 sailors

Most successful partnership: Mercy Tangredi — 4 wins · 17 podiums in 23 events together · 17% win rate
  • Sophia Shaeffer · University of Hawaii (Rainbow Wahine), University of Hawaii (Rainbows 2), University of Hawaii (Rainbows) · College fleet racing, College keelboat, College team racing 26events 2 wins together · 16 podiums · 8% win rate · 68 of 442 races won Beat 71% of the fleet together(+4 vs. without) · best 1st · Apr 2022 – May 2025
  • Morgan Carew · University of Hawaii (Rainbow Wahine), University of Hawaii (Rainbows 1), University of Hawaii (Rainbows) · College fleet racing, College team racing 26events 3 wins together · 16 podiums · 12% win rate · 71 of 426 races won Beat 64% of the fleet together(−10 vs. without) · best 1st · Feb 2022 – May 2025
  • Mercy Tangredi · University of Hawaii (Rainbow Wahine), University of Hawaii (Rainbows 1), University of Hawaii (Rainbows 2), University of Hawaii (Rainbows) · College fleet racing, College team racing 23events 4 wins together · 17 podiums · 17% win rate · 58 of 354 races won Beat 73% of the fleet together(+7 vs. without) · best 1st · Feb 2022 – May 2024
  • Martha Schuessler · University of Hawaii (Rainbow Wahine), University of Hawaii (Rainbows 1), University of Hawaii (Rainbows) · College fleet racing, College team racing 15events 1 wins together · 7 podiums · 7% win rate · 52 of 273 races won Beat 55% of the fleet together(−19 vs. without) · best 1st · Oct 2023 – May 2025
  • Anna Kalabukhova · University of Hawaii (Rainbow Wahine), University of Hawaii (Rainbows 1), University of Hawaii (Rainbows), Vivian Bonsager · 420, College fleet racing, College team racing 13events 2 wins together · 8 podiums · 15% win rate · 28 of 226 races won Beat 62% of the fleet together(−9 vs. without) · best 1st · Apr 2022 – Dec 2024
  • Malia Johnson · University of Hawaii (Rainbow Wahine), University of Hawaii (Rainbows) · College fleet racing, College keelboat, College team racing 12events 0 wins together · 7 podiums · 0% win rate · 28 of 197 races won Beat 65% of the fleet together(−5 vs. without) · best 2nd · Feb 2024 – May 2025
  • Stella Taherian · University of Hawaii (Rainbow Green), University of Hawaii (Rainbow Wahine), University of Hawaii (Rainbows 1), University of Hawaii (Rainbows) · College fleet racing, College team racing 10events 1 wins together · 5 podiums · 10% win rate · 32 of 165 races won Beat 62% of the fleet together(−9 vs. without) · best 1st · Oct 2024 – May 2025
  • Taylor Ledgerwood · University of Hawaii (Rainbow Wahine), University of Hawaii (Rainbows 2), University of Hawaii (Rainbows) · College fleet racing, College team racing 10events 2 wins together · 8 podiums · 20% win rate · 26 of 137 races won Beat 81% of the fleet together(+15 vs. without) · best 1st · Oct 2022 – Apr 2023
  • Kees Horn · University of Hawaii (Rainbow Green), University of Hawaii (Rainbows) · College fleet racing, College keelboat, College match racing, College team racing 7events 0 wins together · 5 podiums · 0% win rate · 29 of 128 races won Beat 83% of the fleet together(+16 vs. without) · best 2nd · Sep 2024 – Apr 2025
  • Everett McAvoy · University of Hawaii (Rainbows) · College fleet racing, College keelboat, College match racing, College team racing 6events 0 wins together · 4 podiums · 0% win rate · 25 of 104 races won Beat 81% of the fleet together(+14 vs. without) · best 2nd · Sep 2024 – Apr 2025

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

Rating history

-23227477201520172019202120232025Helm rating, all classesCrew rating, all classes

— Helm rating, all classes · - - Crew rating, all classes

Event history · 53

DateEventBoatClassRoleFinish
22 Nov 20252025 TURKEY DAY REGATTAVivian BonsagerILCA (rig not given)Skipper10th / 11
20 May 2025Women's Eastern National Semi FinalsUniversity of Hawaii (Rainbows)College fleet racingA Skipper11th / 18
12 Apr 2025PCCSC Carter Ford Open Team Race ChampionshipUniversity of Hawaii (Rainbows)College team racingSkipper2nd / 10
5 Apr 2025PCCSC Wahine ChampionshipsUniversity of Hawaii (Rainbow Wahine)College fleet racingA Skipper (1-6,9)2nd / 9
4 Apr 2025PCCSC Wahine Team Race ChampsUniversity of Hawaii (Rainbows)College team racingSkipper2nd / 3
15 Mar 2025St. Mary's Women's Inter-ConferenceUniversity of Hawaii (Rainbows)College fleet racingA Skipper (1-8)8th / 18
7 Mar 2025Port of Los Angeles Harbor CupUniversity of Hawaii (Rainbows)College keelboatA Crew2nd / 10
22 Feb 2025USF Women's Team RaceUniversity of Hawaii (Rainbows)College team racingSkipper5th / 7
15 Feb 2025Bryson Women's Fleet RaceUniversity of Hawaii (Rainbows)College fleet racingA Skipper2nd / 8
25 Jan 2025Jeff Simon Memorial Regatta CoedUniversity of Hawaii (Rainbows 1)College fleet racingA Skipper29th / 41
25 Jan 2025Jeff Simon Memorial Regatta WomensUniversity of Hawaii (Rainbows 1)College fleet racingA Skipper1st / 5
18 Jan 2025Peter Wenner Rainbow InviteUniversity of Hawaii (Rainbow Green)College fleet racingA Skipper (1-8)2nd / 18
14 Dec 20242024 29er and 420 State ChampionshipsVivian Bonsager420Skipper2nd / 6
16 Nov 2024Fall Pacific Coast ChampionshipUniversity of Hawaii (Rainbows)College fleet racingC Skipper5th / 19
26 Oct 2024Top-9 Fall InviteUniversity of Hawaii (Rainbows)College fleet racingA Skipper (6-16)4th / 9
19 Oct 2024Stoney BurkeUniversity of Hawaii (Rainbows)College fleet racingA Skipper (5-6)2nd / 18
5 Oct 2024Stu Nelson@ Connecticut CollegeUniversity of Hawaii (Rainbows)College fleet racingA Skipper10th / 15
21 Sep 2024PCCSC Richard Sweet Match Race ChampionshipUniversity of Hawaii (Rainbows)College match racingA Crew2nd / 5
20 May 2024Western Women’s National Semi-finalsUniversity of Hawaii (Rainbows)College fleet racingB Skipper15th / 18
7 Apr 2024PCCSC Women's Fleet Race ChampionshipUniversity of Hawaii (Rainbow Wahine)College fleet racingB Skipper2nd / 10
6 Apr 2024PCCSC Women's Team Race ChampionshipUniversity of Hawaii (Rainbow Wahine)College team racingSkipper2nd / 4
24 Feb 2024USF Women's Team RaceUniversity of Hawaii (Rainbows)College team racingCrew6th / 7
18 Feb 2024(day 2) Bryson Women'sUniversity of Hawaii (Rainbows)College fleet racingA Skipper2nd / 7
17 Feb 2024Bryson Women's (day 1)University of Hawaii (Rainbows)College fleet racingA Skipper (1-5)2nd / 7
28 Jan 2024Jeff Simon Memorial Regatta - Women's 2.0University of Hawaii (Rainbows 1)College fleet racingB Skipper (1-3)1st / 7

Helm rating across all classes: 477, #2,700.Crew rating across all classes: 163, #18,935. Compiled from public results; not an official ranking.