Norwegian Charts

Numbering of nautical charts
Charts 001–199 scale 1:50 000 – 1:100 000
Charts 300–399 scale 1:200 000 – 1:10 000 000
Charts 401–499, harbour charts scale 1:5 000 – 1:25 000
Charts 501–550, Arctic and Antarctica scale 1:15 000 – 1:2 000 000