jääliikenne
type: Concept
preferred label: ice traffic @en
preferred label: istrafik @sv
related: talvimerenkulku

talvimerenkulku
type: Concept
broader: merenkulku
in scheme: conceptscheme
preferred label: vintersjöfart @sv
preferred label: winter navigation @en
related: jääliikenne

merenkulku
type: Concept
narrower: talvimerenkulku
preferred label: sjöfart @sv
preferred label: navigation, ships @en