Admiralty MDS
How are ENC symbols displayed on ECDIS?
Historically, it has been the task of highly skilled cartographers to present accurate and reliable information on ADMIRALTY paper charts. However, when it comes to ENCs, the responsibility for the portrayal of navigational information is controlled by the International Hydrographic Organization’s S-52 standard.
https://www.admiralty.co.uk/news/understanding-encs-guide-symbols-and-abbreviations-ecdis