New: wave height, direction and period, with 7-day forecasts.

About the new wave layer
FishMap
FishMap

Guides

Guides to reading the sea with FishMap

Short, practical guides: install the app, read each layer, find your species and plan a trip.

Getting started

  • The whole FishMap window: the sea map in the middle; the top bar; the layer rail on the left edge; the map tools and the Ocean panel on the right; the colour legend, the timeline and the status bar at the bottom. Numbered markers 1 to 7.Guides · Getting started

    · 3 min read

    Getting started with FishMap

    Download the desktop app, sign in and your 30-day free trial starts. Then take a first look at the screen and plan your first trip.

  • The map during the free trial, with the trial badge and a reminder of the days left.Guides · Getting started

    · 2 min read

    Installing FishMap on macOS

    Drag the app into Applications, clear the macOS block with one Terminal command if needed, and answer the Keychain prompt once.

  • Seabed depth map off southern Vietnam: a wide shallow shelf in red, orange and yellow on the left; in the middle the white depth contours crowd together where the bottom drops into deep blue and purple water; to the south-east, banks rise out of the deep water. Three numbered markers, 1 to 3.Guides · Getting started

    · 2 min read

    Taking sea data offshore

    Save FishMap's sea data on your computer while you still have signal, so the map keeps working when the connection drops offshore.

Ocean layers

  • Chlorophyll map around the Mekong Delta: a band of brown and yellow water hugs the coast from the river mouths and curls round the Cà Mau cape into a long band to the south-west; offshore the colour turns quickly to blue and then purple, clear water. Numbered markers, 1 to 3.Guides · Ocean layers

    · 2 min read

    Chlorophyll and salinity: finding productive water

    Chlorophyll shows how much food is in the water, and salinity shows where river water spreads out to sea. The edges of both are where to look.

  • The same waters coloured by water temperature: the white FSLE band runs along the boundary between colder green and blue water to the north and warmer orange and red water to the south. Three numbered markers, 1 to 3.Guides · Ocean layers

    · 2 min read

    Sea temperature and ocean fronts

    Read sea surface temperature, look below the surface with temperature at depth, and find fronts where warm water meets cooler water.

  • Guides · Ocean layers

    · 3 min read

    Reading currents and eddies

    How to read current speed and the drifting particles, why meeting zones matter, and how the sea level anomaly layer shows warm and cold eddies.

Fish habitat

  • The same waters in the Compare view: the coloured grid underneath, white zone outlines on top, and the scores 96, 94 and 89 written in the zones. Numbered markers 1 to 3.Guides · Fish habitat

    · 3 min read

    Reading fish habitat maps

    How FishMap scores the sea for nine species, how to read the Grid, Zones and Compare views, and why you should always cross-check weather and the rules.

AI Captain

  • The AI Captain answering where the vessel is and which nearby water suits yellowfin tuna, mackerel and squid, with distance and bearing.Guides · AI Captain

    · 3 min read

    How to ask the AI Captain

    How to ask good questions, what an answer costs in fish, how to ask about one exact point, and how to save your fishing grounds.