The Mariner's Blog

The blue dot on the ECDIS can lie. In several of the world's busiest waterways, a receiver can display a confident, stable position that is wr...

Every U.S. maritime advisory for the Strait of Hormuz carries a printed expiry date. When one lapses, it is not the end of the guidance, but the st...

Word went around the fleet in 2026 that ADMIRALTY paper charts are "here to stay." The reality in the UK Hydrographic Office's own s...

Walk a boat show or read a bridge-equipment brochure in 2026 and the same phrases appear on ECDIS units everywhere: "S-100 ready," "...

Of the six annexes that make up MARPOL, one governs what comes out of a ship's funnel rather than what goes over its side. MARPOL Annex VI con...

The best way to learn celestial navigation is still a well-chosen book and a sextant in hand. Online courses and apps exist, but the discipline rew...

On January 1, 2026, the training that every seafarer must complete before working at sea changed. For the first time, the foundation of Basic Safet...

From 1 July 2026, shipping enters the UK Emissions Trading Scheme for the first time. Vessel operators trading into and around the United Kingdom n...

As Arctic and Antarctic shipping activity grows, the rules governing vessels in the world's harshest waters have become essential knowledge fo...

TimeZero makes two versions of its marine navigation software, and choosing the wrong one means either paying for professional features a weekend c...