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Automatic Identification System: Types and Working

Lights on a boat

The Automatic Identification System transmits real-time vessel data across VHF frequencies to ships, coastal stations, and satellites, improving situational awareness in congested waterways and supporting search and rescue operations globally. This guide covers how AIS works, what Class A and Class B systems do differently, what data is broadcast, and where the technology’s limitations lie.

Understanding the Prow of a Ship

Oil tanker sailing in the open sea at dawn

The prow is more than the forward tip of a vessel. It’s a load-bearing structural element, a hydrodynamic determinant, and the feature that most visibly expresses a ship’s form and purpose. Understanding it is foundational to understanding how ships are designed and why they perform as they do.