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Upload your Sailing Instructions and MyProNav builds your race brief automatically.
— or add documents yourself —
Add the Sailing Instructions to build the brief.
Works with any public link to the SIs — club website, regatta network, email attachment link.
Demo: any option loads the sample SIs for Off Soundings Race 2.
Reading your Sailing Instructions…
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This race has used X–Z–1–B–I–2 in 3 of the last 4 runnings with NW breeze. Pre-loaded as your best guess — confirm at the gun.
NW 12–16 kn, veering ~15° and building through the morning. HRRR 09z, cached at 9:41.
Hourly forecast & what it means per leg ›
e.g. "New mark, 180° at 1.2 nm" → type 180 and 1.2. Dropped marks appear on the chart and can be added to the course.
Voice entry ("Course X-Z-1-B-I-2") coming in a later phase.
Starboard favored by 0:44 — breeze veering; take the right side early. Live from GPS + HRRR (sim in demo).
Sail calls use stock J/105 polars — add your inventory in My Boats to customize.
Firewater owes you 18 s/nm. Stay within this margin of the scratch boat at each mark and you beat it on corrected time. Tap a boat in Fleet Intel to retarget. Full fleet math ›
GFS runs about 2 kn lighter but matches direction within 5° until 14:00, past your 13:05 finish. Trust the HRRR numbers today.
Projected TWAs in the leg brief use this forecast at each leg's ETA — not just the start. They re-run when a new HRRR cycle lands.
Fastest rating on top, your boat as the reference line. Beat every margin and you win the class outright.
Boat data comes straight from the scratch sheet and your rating math — no guesswork. Photo links search the web for the boat by name, class, and sail number.
Set from your SIs — Off Soundings Race 2 is a point-to-point course.
Oscillating ±5° around 336 — tack on headers.
Matches your wind shots within 2° — heading logs are now trusted for true wind.
Practice tacks before the start calibrate your true wind.
A stock class polar from the built-in database (J/24, J/70, J/105, IOD and more) powers your leg brief at no cost.
Edit boat ›
Race on more than one boat? Each boat keeps its own rating, polar, and instrument setup — pick one when you create a race.
Crew aboard a race automatically get the crew brief and race-day updates — boat-time changes, weather briefings, course calls — by text and email.
This adds them to your portfolio. Put them on a race from the New Race crew picker — that's when briefs and updates start.
Crew update their own preferences and allergies from their crew page — the list stays current.
No fleet polars yet — every boat sails the J/105 polar, scaled faster or slower by its PHRF rating, in a corrected-time tie. Gaps are drawn 3× real so the spread reads at this scale; the finish deltas below are the true numbers.
Joined late? Sync rounds the clock to the nearest minute — tap it on any gun.
Sail past each end and tap — phone GPS marks the spot. Bias comes from the line bearing vs the HRRR wind; burn time from your speed and distance.
Wind shots log to the Wind Board — open it ›
Point the bow dead into the wind and tap to read the compass — that wind drives the bias above. No HRRR, or a last-second RC drop mark? Enter its bearing (that is the wind) and distance: the bearing sets the bias, the distance sets the first-beat time.
Demo: pings load sample line data for Off Soundings Race 2.
Your event page already has the documents — we pull them automatically
Everyone checked gets the crew brief & race-day updates
This can't be undone.