Sea distance from Houston to Fremantle
The sea route from Houston (United States) to Fremantle (Australia) is about 11,186 nautical miles, which is 20,716 km or 12,872 statute miles. The route transits Panama Canal. That is about 22% 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) | 93d 5h |
| Sailboat, average (6 kn) | 77d 16h |
| Displacement trawler (8 kn) | 58d 6h |
| Fast trawler (10 kn) | 46d 15h |
| Planing motor yacht (15 kn) | 31d 2h |
| Fast motor yacht (20 kn) | 23d 7h |
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 Houston 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 Houston by sea?
About 11,186 nautical miles (20,716 km / 12,872 statute miles) along the practical sea route, which transits Panama Canal. The straight-line distance is shorter, but boats follow coastlines, channels, and traffic lanes.
How long does it take to sail from Houston to Fremantle?
At a typical sailing average of 6 knots it is about 77d 16h underway. A 10-knot trawler needs about 46d 15h, and a 20-knot motor yacht about 23d 7h. 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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