Cardinal mark (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Cardinal mark" in English language version.

Last modified: 01:49:55, 7 November 2025 (UTC)

Ref.Un. Ref.Website

Global rank English rank

low place

low place

boatschool.com.au (Global: low place; English: low place)

Sanders 2018. Sanders, John (2018), "Cardinal Marks", Boatschool, retrieved 15 September 2020

"R1001 The IALA Maritime Buoyage System". International Association of Marine Aids to Navigation and Lighthouse Authorities. Retrieved 2025-07-09.
"R0110 – Rhythmic Characters of Lights on Aids to Navigation". International Association of Marine Aids to Navigation and Lighthouse Authorities. Retrieved 2025-07-09.