Marine OS

Sea distances

Sea distance from Piraeus to Cape Town

The sea route from Piraeus (Greece) to Cape Town (South Africa) is about 6,125 nautical miles, which is 11,343 km or 7,048 statute miles. The route transits Suez Canal and Bab-el-Mandeb. That is about 42% longer than the direct great-circle line, because the practical route follows coastlines and shipping lanes.

6,125
nautical miles
11,343
kilometers
25d 13h
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)51d 1h
Sailboat, average (6 kn)42d 13h
Displacement trawler (8 kn)31d 22h
Fast trawler (10 kn)25d 13h
Planing motor yacht (15 kn)17d 0h
Fast motor yacht (20 kn)12d 18h

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 Piraeus to Cape Town 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 Cape Town from Piraeus by sea?

About 6,125 nautical miles (11,343 km / 7,048 statute miles) along the practical sea route, which transits Suez Canal and Bab-el-Mandeb. The straight-line distance is shorter, but boats follow coastlines, channels, and traffic lanes.

How long does it take to sail from Piraeus to Cape Town?

At a typical sailing average of 6 knots it is about 42d 13h underway. A 10-knot trawler needs about 25d 13h, and a 20-knot motor yacht about 12d 18h. 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.