Please select your home edition
Edition
Pantaenius Sail 2025 AUS Leaderboard

The Appliance of Science

by Penny Haire on 10 Sep 2010
Localised differences in current - Rolex Big Boat Series and Melges Worlds San Francisco Penny Haire
Local knowledge of the strong and variable currents found in San Francisco has always been the preserve of a few ‘old salts' and some local pro-sailors. This is now set to change as Tidetech release a new tidal current model of the Bay which shows all the features and eddies of the tidal flow in incredible detail.


The high resolution model gives data about the current every 100m, at 30 minute time steps and can accurately predict the turn of the tide within five minutes. It even shows the effect of localised tidal acceleration, which can lead to big differences in current over small distances. Imagine what this will do for your tactics!


The model has been produced for by Tidetech's Dr Roger Flather, one of the world's most respected and experienced ocean scientists. He was assisted by Dr Roger Proctor who has produced tidal models for the UK Olympic Team for five Olympic Games.


The model is available now for competitors in GRIB and PDF format for the Rolex Big Boat Series and Melges 32 Worlds.

Maritimo S SeriesSouthern WindAllen Dynamic 40 Footer

Related Articles

The New York Sail Grand Prix Start Collision
Video Analysis and Reaction On Sunday at the Mubadala New York Sail Grand Prix there was a collision involving three teams in the final seconds before the Race 3 start.
Posted on 2 Jun
SailGP, J/70s, Women's 2v2 Team Race
SailGP visits NYC, J/70 Corinthian Worlds, Women's 2v2 Team Race SailGP's foiling circus arrived in the Big Apple last weekend for the Mubadala New York Sail Grand Prix (May 30-31), which was the only SailGP stopover that's set to unfurl on American waters this season.
Posted on 2 Jun
The tech curve…
It just marches on. Slide rule and Hewlett Packard be damned, these vessels are a tour de force It just marches on. The latest launchings for solo/crewed, mono/multi masterpieces are a tour de force when it comes to material science, electronics, engineering, physics, especially hydro and aerodynamics. Slide rule and Hewlett Packard be damned.
Posted on 2 Jun
Video: Bizarre first day at the New York SailGP
Swirling Winds, Crane Issues, 3 Boats Racing Swirling winds in New York caused major problems launching the fleet of F50s at the Mubadala Sail Grand Prix, so only 4 boats made it on to the water, and that was rapidly reduced to just 3 when the Bonds Flying Roos nosedived, causing significant damage.
Posted on 31 May
Championships shine, AC wakes, SailGP adapts
So much has been going on that it's tricky to even know where to start What a week for sailing! So much has been going on that it's tricky to even know where to start. There have been so many highlights, both in terms of the events I attended in the UK and what has been happening further afield.
Posted on 26 May
Olympic class winners, Cup news, Etchells Worlds
49er, 49erFX and Nacra 17 World Championships, Cup news, Etchells Worlds The Los Angeles 2028 Olympics are still years over the horizon, but top sailors are already deep into this Olympic quadrennial. Take the recent 2026 49er, 49erFX and Nacra 17 World Championships, where all three classes saw new world champions minted.
Posted on 19 May
Australia's back!
Like, did we ever leave? Not really… Like, did we ever leave? Not really… Ever since Sir Frank Packer KBE kicked it off, we've been there, or thereabouts. For instance, Grant Simmer OAM has been involved with every one of them since winning it in 1983.
Posted on 17 May
Team Australia America's Cup launch videos
Videos with key members of the team, Grant Simmer OAM, Glenn Ashby, and Tash Bryant Team Australia's challenge for the 38th America's Cup was launched yesterday at the Royal Prince Edward Yacht Club.
Posted on 14 May
The Same, But Different
A packed schedule coming up with a diverse range of events I am so enjoying reading all the event news now the season has begun in earnest in the UK. The sun has been plentiful throughout April and May, encouraging everyone to get back out on the water.
Posted on 12 May
TP52s, IMOCA 60s, Congression Cup
52 SUPER SERIES and IMOCA 60 season openers, 61st Congressional Cup When the conversation turns to Grand Prix keelboat racing, it's never long before the 52 SUPER SERIES enters the mix. The 2026 season is will feature five events, starting with this week's Puerto Portals 52 Super Series Sailing Week.
Posted on 5 May