Port-to-port sea distance

Ju'aymah to Ulsan distance

The sea distance from Ju'aymah (Saudi Arabia) to Ulsan (South Korea) is about 6,290 nautical miles (11,648 km), via the Strait of Hormuz and Malacca Strait. At 12 knots that is about 21 days 20 hours at sea.

Distance

6,290 nm

11,648 km

Sea days @ 12 kn

21.8

21 days 20 hours

ECA miles

0 nm

No ECA on route

Canals & straits

Strait of Hormuz · Malacca Strait

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Sea days by speed

Speed	One way	Round voyage
10 knots	26.2 days	52.4 days
11 knots	23.8 days	47.6 days
12 knots	21.8 days	43.7 days
13 knots	20.2 days	40.3 days
14 knots	18.7 days	37.4 days
15 knots	17.5 days	34.9 days

Steaming time only, with no allowance for weather, canal waiting or port time. The round voyage assumes the ship ballasts back on the same route.

Routes compared

Shortest route

6,290 nm

21.8 days at 12 kn · Strait of Hormuz · Malacca Strait

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Avoiding the Malacca Strait (via Sunda or Lombok)

6,891 nm+601 nm

23.9 days at 12 kn · Strait of Hormuz · Sunda Strait

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Very deep-draft ships sometimes avoid the Malacca and Singapore straits and go through the Lombok or Sunda strait instead, which adds 601 nm (about 2.1 days at 12 knots).

Voyage estimates by ship size

About this trade

Arabian Gulf → Far East crude. Arabian Gulf crude to China, Korea, Japan and Taiwan is the benchmark VLCC trade and the single biggest source of long-haul tanker demand.

Typical ship sizes: VLCC, Suezmax
Related benchmark routes: TD3C (MEG–China VLCC)

Questions

How far is Ju'aymah from Ulsan by sea?

The sea distance from Ju'aymah to Ulsan is about 6,290 nautical miles (11,648 km), via the Strait of Hormuz and Malacca Strait.

How long does a tanker take to sail from Ju'aymah to Ulsan?

About 21 days 20 hours at 12 knots, or 18.7 days at 14 knots. That is steaming time only; add time for port calls, canal transits and weather.

Which canals and straits does the Ju'aymah–Ulsan route pass?

The shortest route passes the Strait of Hormuz and Malacca Strait. Alternative routings are listed above for ships that cannot or will not use them.

How much of the voyage is inside an Emission Control Area?

None. The whole route is outside Emission Control Areas, so the 0.50% global sulphur cap applies throughout.

Terms on this page

Distances are calculated by Vessbook on a modelled global shipping-lane network for a tanker at 12 m draft, from berth area to berth area.