Real-time Ocean Intelligence for Australian Offshore Fishing

BayCast Offshore is a live ocean-intelligence map built for Australian offshore fishing. It pulls sea surface temperature, ocean currents, thermal breaks, and upwelling zones into one screen — the same conditions that decide whether a marlin trip is a session or a sunburn.

Sea surface temperature is the foundation. Daily satellite SST from IMOS and the US Navy HYCOM model is gap-filled and shaded across every metre of Australian water — from the Coral Sea down through the EAC, across Bass Strait, and along the south-east shelf where the cool Tasman pushes north. You see the warm pockets, the cold lines, and where they meet.

Ocean currents and thermal breaks turn that picture into fishable info. Animated current streamlines show the East Australian Current pulling south past Eden NSW, the eddies spinning off the Sydney shelf, and the Leeuwin running down WA. Where a warm tongue meets a cold front, predators feed — marlin, yellowfin tuna, kingfish, mahi mahi. BayCast highlights those edges automatically.

The rule is simple: warm meets cold, fish feed there. The temperature gradient — what BayCast calls a thermal break — is where bait stacks against the edge and pelagics work it. Look for the sharpest colour transitions on the SST layer, then check current direction across that line.

Crosshair-style readout shows live water temperature and current speed under the centre of the screen as you pan — no pin-dropping, no menus. Long-press anywhere to drop a GPS mark; the popup gives you Decimal, DMM and DMS coordinates with one-tap copy for your boat GPS, sounder or chartplotter.

Quick-jump region presets get you straight to Bass Strait, Eden NSW, Sydney offshore, the QLD shelf or anywhere else around the country in one tap. Watch the Live readout in the corner update — that's your fish.