Sea distance from Tanjung Priok to Fremantle
The sea route from Tanjung Priok (Indonesia) to Fremantle (Australia) is about 1,901 nautical miles, which is 3,520 km or 2,187 statute miles. The route transits Sunda Strait. That is about 16% longer than the direct great-circle line, because the practical route follows coastlines and shipping lanes.
Voyage time by boat speed
Time underway is distance divided by speed. These are continuous-passage figures with no stops or weather margin.
| Boat and speed | Time underway |
|---|---|
| Sailboat, conservative (5 kn) | 15d 20h |
| Sailboat, average (6 kn) | 13d 5h |
| Displacement trawler (8 kn) | 9d 22h |
| Fast trawler (10 kn) | 7d 22h |
| Planing motor yacht (15 kn) | 5d 7h |
| Fast motor yacht (20 kn) | 3d 23h |
Planning estimate, not navigation
This distance is computed over the open Eurostat shipping-lane network. It is a realistic passage length for planning, but your sailed distance will differ with weather routing, currents, draft, and the exact berths you leave from and arrive at. Always verify against official charts.
Building with these numbers? The sea route & distance API returns this figure, voyage time, and route geometry for any port pair in one GET request.
Plan this passage properly
Open Tanjung Priok to Fremantle in the Marine OS route planner: it suggests the sea route, then you drag waypoints, set your speed and fuel burn, and check weather and tides along the way.
Open this route in the plannerFrequently asked questions
How far is Fremantle from Tanjung Priok by sea?
About 1,901 nautical miles (3,520 km / 2,187 statute miles) along the practical sea route, which transits Sunda Strait. The straight-line distance is shorter, but boats follow coastlines, channels, and traffic lanes.
How long does it take to sail from Tanjung Priok to Fremantle?
At a typical sailing average of 6 knots it is about 13d 5h underway. A 10-knot trawler needs about 7d 22h, and a 20-knot motor yacht about 3d 23h. Add margin for weather, currents, and stops.
How is this distance calculated?
It is computed over the open Eurostat global shipping-lane network, the same kind of network freight routing tools use. It is a realistic planning estimate, not a navigation product: your sailed distance will vary with weather routing, draft, and the exact harbors you use.
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