Gannet View
Now so do you. Currents, temperature breaks, eddies, chlorophyll and the seabed on one map, for any coast, and every number tells you how old it is and how well it has been checked.
From thirty metres up
You can't. So Gannet View reads the water for you.
Wings folded. No hesitation.
A gannet looks down and sees the fish. From a boat you can't, so Gannet View reads the water that puts them there, and shows its working: which satellite, which day, how sharp, and whether anyone has checked it against a real instrument.
Currents
Offshore currents drawn as living streaks, coloured by temperature, at the same detail whether you are looking at a whole ocean or a single reef. Near the coast the sharper 9 km ocean model takes over from the satellite field, because that is where the satellite goes blind.
Temperature and eddies
Gannet View draws sea surface temperature at 1 km where the satellites have a clear look, and measures the break for you: how sharp it is, how far away, and which way the warm water lies. Over it, sea level from satellite altimetry marks the warm-core and cold-core eddies that persist for weeks, with their strength written on them.
More about sea temperature, breaks and eddies
Chlorophyll and clarity
Chlorophyll at about 4 km worldwide, and water clarity as the depth you could see a white disc. Where a satellite saw the water it is drawn solid; where cloud hid it the map shows an estimate, faded and dotted, so nobody mistakes a guess for a measurement.
More about chlorophyll and water clarity
Seabed
Reefs, ledges, the shelf edge and the canyons, as shaded relief and depth contours, worldwide at about 450 metres and much finer on the NSW shelf where multibeam surveys exist. Depth numbers follow your units, and the lines stay still while you zoom.
More about seabed relief and depth
Honest by design
Anglers have been burned by confident colours. So the data comes with its receipts.
Not buried in a menu: on the layer, on the tap, on the time bar. A held satellite day says it is held. A forecast day says it is a forecast.
Our currents were scored against moorings off Batemans Bay, Port Hacking and Sydney and a radar off Newcastle. On the NSW south coast the typical error is about half a knot, and the map tells you that, not just “good”.
Accuracy is stated per place. Anywhere nobody has measured it yet the map says “not checked in this area” instead of letting a confident colour imply otherwise.
Built for the boat
A time bar with day chips, step buttons and a fine-scrub you control by sliding your finger away from it, so landing on yesterday at noon takes a second. Tap the water anywhere for the temperature, depth, current and the weather at that spot.
Credit where it is due
Gannet View stands on data that space agencies and observing programmes publish for everyone. We stitch it, check it, and explain it.
Free, open ocean data published by space agencies and marine observing programmes: Copernicus Marine, NOAA, NASA, IMOS, Geoscience Australia and others. Every layer names its source, its date and its grid size on the map.
Satellite ocean colour and sea level run one to a few days behind because that is how long the agencies take to publish them. Sea temperature and currents refresh daily. The map shows the date and age on every layer.
The daily layers are worldwide. Detail and checking are strongest on the New South Wales coast, where the first measured accuracy work was done, and we say so everywhere else.
No. Gannet View shows ocean conditions. It is not a navigation chart and must not be used for navigation or safety decisions.
Yes: nautical miles, kilometres or miles; metres or feet; °C or °F; knots, km/h, mph or m/s. The whole map follows.
It is built for the boat: one thumb, a time slider you can scrub finely, and a layer chip row. Offline packs for no-signal water are in the app.