Distance from Cape Town to St. Helena by Sea: ~1,650 Nautical Miles

The ocean passage from Cape Town, South Africa to St. Helena Island (South Atlantic) is approximately:

• 1,650 nautical miles (nm) / 3,056 km / 1,899 statute miles.

Voyage Context

• Typical vessel (10–12 kt): 6–7 days.
• Fast ship (20 kt): 3.5 days.
• Sailing yacht (5–7 kt): 10–14 days (weather-dependent).
• RMS St. Helena (former royal mail ship): 5 days (retired 2018).

Route

Great circle: Cape Town (34°S, 18°E) → NW across South Atlantic → St. Helena (15.9°S, 5.7°W). Crosses Benguela Current (cold, nutrient-rich) → South Atlantic High (trade winds SE).

Current Access

• No regular passenger ship. RMS St. Helena retired.
• Air: Flights from Johannesburg (JNB) via Windhoek (WDH) or direct (seasonal) to St. Helena Airport (HLE) — ~6h flight.
• Cargo: Occasional freighters (MSC, CMA CGM) — not for passengers.
• Yacht: Popular stop for circumnavigators (South Atlantic rally).

Why It Matters

St. Helena's extreme isolation (nearest land: Ascension 1,100 km, Africa 1,900 km) defines its history (Napoleon's exile), ecology (endemic flora/fauna), and current logistics (everything shipped/flown in).