Published:25th October 202422nd December 2024 Last Updated:22nd December 2024 General Nautical Terminology Send Vertical movement of waves or swell against, for example, a harbour wall Related Content: About UsHow to obtain an International Certificate of Competence (ICC)International Maritime Signal FlagsSailing the Ionian: A Lazy Cruiser’s Dream Route (Even If You’ve Never Sailed Before)Signalling & Communication