Logo of Martin Sollien's portfolio
Writing Maps About

Shipping chokepoints in a mercantile sea + + + +

Strait of Dover

ASIA

EUROPE

Strait of

Hormuz

Strait of Gibraltar

INDIAN

OCEAN

AFRICA

ATLANTIC

OCEAN

Cape of Good Hope

Bohai Strait

ASIA

Taiwan Strait

Luzon Strait

STILLE-

HAVET

Malacca Strait

INDIAN

OCEAN

OCEANIA

Bering Strait

NORTH

AMERICA

Yucatán Strait

ATLANTIC

OCEAN

PACIFIC

OCEAN

Panama Canal

SOUTH

AMERICA

Magellan Strait

Source: Humanitarian Data Exchange

Bering Strait

Dover Strait

ASIA

Bohai Strait

NORD-

AMERIKA

Hormuz

Strait

ASIA

EUROPE

Taiwan Strait

Yucatán Strait

ATLANTIC

OCEAN

Luzon Strait

PACIFIC

OCEAN

Gibraltar Strait

Malacca Strait

PACIFIC

OCEAN

AFRICA

Panama Canal

INDIAN

OCEAN

SOUTH

AMERICA

ATLANTIC

OCEAN

OCEANIA

Cape of Good Hope

Magellan Strait

Source: Humanitarian Data Exchange



After the Iran war, the Strait of Hormuz became a major chokepoint for shipping of brent crude out of the Persian Gulf.


The worldwide sea is dotted with similar chokepoints. These are narrow passages or capes where shipping traffic is forced through in order to avoid long rerouting.


The map was made with a three-part orthographic projection. This was done to prevent the unnatural breakoff a square map projection would make. Notice how a lot of the chokepoints are situated in south east Asia. A lot of trade comes from these countries, with major shipping ports in both China and Singapore. Lines are drawn to show the most common shipping routes.


This map does a good job at showing where the chokepoints are, but it doesn’t tell any individual story about the geopolitics of a certain point.


This map uses data from the Humanitarian Data Exchange, an UN initiative, to show where these crucial chokepoints are. Circles are sized based on monthly average capacity through these straits.


Map of shipping chokepoints
+ + + +

A stylized 3D render of the shipping chokepoints.

The map was published in Aftenposten on May 8, 2026.