Should yougo?
Set the wind, waves, and visibility that mean stop for your boat. Get an instant GO, CAUTION, or NO-GO before you leave the dock, and a leg-by-leg briefing for the whole run.
No credit card required.
Thomas Point, MD
GRAN VISTA · 53′ flybridge
GO
Comfortable cruising day for your boat
Scored against your own wind, wave, and visibility limits — not a generic forecast.
NOAA first. Everything else labeled.
NOAA NDBC buoys · National Weather Service marine forecasts & warnings · NOAA CO-OPS tides & currents
No crowd-sourced or user-reported conditions, ever. Where NOAA does not measure, a marine model fills the gap and says so on the number, and NOAA always outranks it. Every briefing cites the product it was built from and when it was issued.
Not the weather now.The weather when you get there.
Every other app shows you conditions at a point, right now. Tell GoNoGo where you are leaving from, where you are going, when you are leaving, and how fast you cruise, and it breaks the run into legs, works out when you will reach each one, and reads the wind, seas, current, and tide at that time, at that place.
- Named legs with real arrival windows
- Current-aware ETAs, so the times are actually right
- The roughest stretch called out before you leave
- A ride assessment for your hull, not a generic one
- A float plan you can send to someone ashore
Departure briefing
Thomas Point → Tides Inn, Irvington VA
SW 5–10 kt · seas 1 ft
Smoothest section of the trip.
SW to 10 kt · seas 1 ft
Light chop developing as you move south.
SW 10–15, gusts 20 · seas 1–2 ft
Roughest portion. Light head sea, occasional bow spray.
S near 10 kt · seas 1 ft or less
Improves immediately after the turn west.
Captain’s assessment.Normal cruise RPM. No weather routing needed. You’ll be tied up well before the afternoon storm risk.
A forecast tells you the weather. This tells you whether to go.
Windy, SailFlow and the rest show you numbers and leave the judgment to you, because they don’t know your boat. We ask.
A map colored for YOUR boat
Not raw wind. The water around you tinted green, amber or red against the limits you set, with a slider to run it forward 48 hours and find your window.
Say where you're going
“Leaving Annapolis Saturday morning for Cape May” fills in the route. Or type any of about 98,000 maritime places, towns, marinas and zip codes.
A briefing you can send
Leg by leg, at the time you actually get there. Text it, email it to the crew, print it. The float plan goes separately to whoever stays ashore.
It explains itself
Every non-GO names the leg, the factor, your own limit and the NWS sentence it came from. Ask it why it differs from your other weather app.
Everything that decides your day
Eight live signals, each judged against your limits, each explained in plain English.
Wind & gusts
Sustained, gusts, and direction relative to your heading
Seas & swell
Combined height, period, and ground swell split from local chop
Tides
Height at any moment, next high and low, and your draft
Currents
Set and drift, fair or foul, and slack water timing
Visibility & fog
Dew-point spread fog risk, not just a forecast word
Storms & lightning
How many hours until the first thunderstorm reaches you
Water & air temp
Sea surface temperature and the cold-water risk it implies
Warnings
Live NWS small craft advisories and marine warnings on your track
Weather you can actually decide on
A forecast tells you the numbers. GoNoGo tells you what they mean for you.
Tell us about your boat
Name, length, beam, draft, and hull. Then the wind, waves, and visibility that mean stop for you.
We read the water
NOAA first: buoys, National Weather Service marine forecasts and warnings, CO-OPS tides and currents. Read live, the moment you ask. Where NOAA does not measure, the model is labeled.
Get a straight answer
GO, CAUTION, or NO-GO for right now — and a leg-by-leg briefing for the whole run.
Try it right now
A live read on a real spot, no account needed. Then make it yours.
See a real read, no signup
Tap a spot for a live marine go/no-go
Pick a spot above. This is the generic read; with a free account you score every spot against your own boat and limits.
Why not just check a forecast?
Because a forecast is the same for everyone. Your boat isn't.
A generic forecast
- ·Raw numbers you have to interpret yourself
- ·The same for a kayak and a 53-foot flybridge
- ·Conditions at a point, right now
- ·Tides and currents in a separate app
- ·No single answer: you piece it together
GoNoGo Weather
- One clear GO / CAUTION / NO-GO
- Measured against your boat and your limits
- Conditions at the time you'll actually be there
- Wind, seas, tides, and currents in one read
- Leg-by-leg briefing for the whole route
Ask GoNoGoWX
Beta“Is Saturday better than Sunday for a run to Solomons?” Ask in plain English and get a straight read from live buoys, forecasts, and warnings.
Questions
What makes this different from a marine forecast?
A forecast is the same for everyone. A 1.5-foot chop is nothing on a 50-foot trawler and a rough day in a 17-foot skiff. GoNoGo scores live conditions against your boat and the limits you set, then gives you one answer: GO, CAUTION, or NO-GO.
What is a departure briefing?
Pick where you are leaving from and where you are going, your departure time, and your cruising speed. GoNoGo breaks the route into named legs, works out when you will reach each one, and tells you the wind, seas, current, and tide you will find there at that time — not the conditions right now.
Where does the data come from?
Official public sources: NOAA NDBC buoys, National Weather Service marine zone and point forecasts, NWS active marine warnings, and NOAA CO-OPS tide and current predictions. Every briefing cites the products it was built from and when they were issued.
Does it cover tides and currents?
Yes. Tide height at any moment, the next high and low, and tidal current set and drift with slack-water timing, so you know whether the current is with you or against you on each leg.
Can I get updates before I leave?
Yes. Choose how often you want to hear from us and we will send an update on that schedule, plus an immediate alert when conditions cross one of your limits.
Is it a substitute for an official forecast?
No. GoNoGo is a decision aid built on official data, not an official weather briefing and not a guarantee of safety. The captain is always responsible for the vessel. Always check official NWS marine forecasts and warnings before departure.
Make the call with confidence.
Your limits. Your call. Start free and see your first read in under a minute.
A decision aid built on NOAA and National Weather Service data. Not an official weather briefing and not a guarantee of safety — the captain is always responsible for the vessel. · A FrankVenture product