Sea distance from Cape Town to Shanghai
The sea route from Cape Town (South Africa) to Shanghai (China) is about 7,799 nautical miles, which is 14,444 km or 8,975 statute miles. The route transits Sunda Strait. That is about 11% 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) | 65d 0h |
| Sailboat, average (6 kn) | 54d 4h |
| Displacement trawler (8 kn) | 40d 15h |
| Fast trawler (10 kn) | 32d 12h |
| Planing motor yacht (15 kn) | 21d 16h |
| Fast motor yacht (20 kn) | 16d 6h |
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 Cape Town to Shanghai 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 Shanghai from Cape Town by sea?
About 7,799 nautical miles (14,444 km / 8,975 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 Cape Town to Shanghai?
At a typical sailing average of 6 knots it is about 54d 4h underway. A 10-knot trawler needs about 32d 12h, and a 20-knot motor yacht about 16d 6h. 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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