
Plimsoll Line Markings: How Ships Know Their Safe Load
The plimsoll line is the load line mark amidships on the hull. WNA, W, S, T, F and TF each set the maximum safe draft for different waters.

The plimsoll line is the load line mark amidships on the hull. WNA, W, S, T, F and TF each set the maximum safe draft for different waters.

The Beaufort scale measures wind force from 0 to 12. Learn what each level means for sea conditions, ship safety, and vessel tracking at sea.

A tug boat is a powerful vessel built to push and pull larger ships into port. Learn what tug boats do, how they work, and the different types used at sea.
Learn how to use a ferry tracker to follow any route in real time. Track your ferry's position, ETA, and delays from any device, on any operator.

Learn why motion sickness on a cruise happens, which routes are roughest, and the best prevention methods so you can enjoy every day at sea.
Find the best cruise ship location tracker apps. Compare real-time AIS tools with AI insights, ETA updates, and family-friendly features.

Everything you need to know about captain license requirements: sea time, medical certificate, USCG exam, costs, and application steps explained.

Bulk carrier ships move nearly half of global seaborne trade. Learn the main size classes, what they carry, and how to track them live.

Explore the main oil tanker classes from GP to ULCC, with DWT ranges, dimensions, barrel capacity, and global fleet statistics.

Port is the left side of a ship, starboard is the right. Learn the difference, the mnemonics, and why it matters on cruise ships and boats.

Cruise itineraries change more often than passengers expect. Learn why routes shift, what you are owed, and how real-time tracking keeps you informed.

Find your cruise ship's exact position in real time using free AIS apps. See live maps, ETA predictions, and sea conditions for any cruise ship.