Skip to main content
sea lane

sea lane

3 4.2
A regular route at sea used by ships and boats
  • noun
  • /si leɪn/
translation icon : ruta marítima
  • Without the Cape sea lane, the Allies would not have held Egypt, the Middle East, or India.
  • vital sea lanes
  • protect the sea lanes
  • secure sea lanes

Examples

  • Singapore's strategic location in the middle of air and sea lanes into Southeast Asia contributed much to this foreign affairs power.

    Academic text (1992)
  • In ancient times, it was the Mediterranean Sea that provided the sea lanes for world commerce.

    Academic text (1990)
  • None of the major sea lanes go through it.

  • By doing so, the United States is not "containing" China; it is protecting international sea lanes in the region.

    Academic text (1996)
  • There are also battles over sea lanes.

    Academic text (2008)
  • But gradually, countries began to commit more naval power to policing sea lanes.

    Academic text (2009)
  • We have a common interest in the free flow of commerce, including through the vital sea-lanes of the Indian Ocean.

    Academic text (2003)
  • Indonesia straddles some of the world's most critical sea lanes, through which substantial levels of regional trade pass.

    Academic text (2001)
  • Similarly, Washington and Beijing share a common interest in securing open sea lanes to ensure the unhindered passage of cargo ships.

    Academic text (2005)
  • The Navy is crucial for protecting international sea lanes that facilitate global trade.

Synonyms

seaway
vssea lane
  • Specialized
3 4.4

A route through the sea that ships use to travel between places

is identical in meaning but focuses on regular use by vessels
ship route
vssea lane
2.3

A path at sea that boats follow regularly

is the same idea but can apply to a wider set of sea paths
sea line
vssea lane
3.9

A regular ship route that carries goods or people between ports

is about a regular route rather than a scheduled transport service

How Navigable

sea lane
3 4.2
waterway
37 2.3
channel
57 3.8
canal
90 2.0
river
1.0
stream
244 1.0

Surface Forms

sea lane singular
sea lanes plural

Morphology

sea + lane

The meaning 'a regularly used route at sea' is directly and compositionally derived from 'sea' (body of water) + 'lane' (a designated route or narrow path), following the same logic as land lanes (e.g., bus lane, traffic lane). This is a common, cross-linguistic concept (cf. voie maritime, ruta marítima) so a B1 learner who knows both constituents will readily infer the MWE meaning.

Etymology

Sea lane comes from the image of a road on water: sailors and mapmakers saw that ships kept to the same paths and called them sea lane, like a 'lane' on land. So it means a regular 'route' used by ships.