Marine OS

Sea distances

Sea distance from Durban to Kaohsiung

The sea route from Durban (South Africa) to Kaohsiung (Taiwan) is about 6,380 nautical miles, which is 11,817 km or 7,342 statute miles. The route transits Sunda Strait. That is about 6% longer than the direct great-circle line, because the practical route follows coastlines and shipping lanes.

6,380
nautical miles
11,817
kilometers
26d 14h
at 10 knots

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 speedTime underway
Sailboat, conservative (5 kn)53d 4h
Sailboat, average (6 kn)44d 7h
Displacement trawler (8 kn)33d 6h
Fast trawler (10 kn)26d 14h
Planing motor yacht (15 kn)17d 17h
Fast motor yacht (20 kn)13d 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 Durban to Kaohsiung 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 planner

Frequently asked questions

How far is Kaohsiung from Durban by sea?

About 6,380 nautical miles (11,817 km / 7,342 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 Durban to Kaohsiung?

At a typical sailing average of 6 knots it is about 44d 7h underway. A 10-knot trawler needs about 26d 14h, and a 20-knot motor yacht about 13d 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.