Captain's Corner — Knowledge
Knowledge
Seamanship, maintenance and the skills every owner and crew member should master — explained by professionals.
KnowledgeLife-Saving Equipment Offshore: PLBs, EPIRBs, SARTs and Satellite Communicators
Four technologies that decide how quickly rescuers find you — PLBs, EPIRBs, SARTs and satellite communicators — and why a well-equipped offshore yacht carries several of them.
Captain's Corner Magazine · 17 October 2026
KnowledgeGPS vs DGPS – What Is the Difference?
How differential corrections improve satellite positioning, and why greater accuracy matters in marine navigation.
Captain's Corner Magazine · 15 August 2026
KnowledgeChart Inaccuracies – Understanding the Limits of Paper Charts and ENCs
Your GNSS position may be accurate to a few metres — but the shoal on the chart may come from a survey a century old. How survey age, chart compilation and CATZOC shape what you can trust.
Captain's Corner Magazine · 17 October 2026
KnowledgeFrom the Ocean to the Human Body: The Growing Impact of Plastic Pollution
A plastic bottle thrown overboard does not disappear — it fragments into microplastics that travel from the sea into soil, crops, drinking water and, ultimately, the human body.
Captain's Corner Magazine · 17 October 2026
KnowledgeSquat Effect: Why Boats Sink Deeper at Speed
A yacht that has plenty of water under the keel at anchor can have far less once underway — squat makes a moving vessel sit deeper, and speed makes it worse.
Captain's Corner Magazine · 17 October 2026