How AIS Works - Operation of AIS

Within seconds after the AIS MOB personal locator beacon easyONE-DSC is submerged into the water, the unit activates automatically and starts trasnmitting AIS and DSC alerts into vicinity of up to 7 nauticval miles.
You can also see the bright and strong red LED flare flashing which increases visibility of the victim in darkness drastically.
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The term Automatic Identification System (AIS) refers to a radio system that improves the safety and guidance of vessel traffic by exchanging navigation and other vessel data.

How LUXSPACE uses AIS messages to monitor worldwide shipping traffic

Many people wonder how ships made it across entire oceans without getting lost in the seventeenth century. Aaron introduces seventeenth century navigation to us today by beginning with piloting.

This video complements the earlier demonstration of wind effect on straight track and shows now wind effect on turning circles. It can be seen that during a turn under strong wind the ship reduces turning when it comes close to equilibrium on straight track - if the Wind-to-ship speed ratio is big enough then the ship even goes straight instead of turning. This is shown for three samples for Head, Stern wind and Beam wind. The turning can be increased if the ratio of Wind speed-to-ship...

The latest summary from PTR Holland on the subject of pilot ladders. Here is the most important information on maintenance, use and replacement & insepection record book.

by Casual Navigation

This video shows an introduction on the Spiral-Test-Manoeuvre and describes the procedure how to steer through this manoeuvre and measure the data needed. The results will be displayed in a characteristic diagram allowing to identify stable and unstable conditions and related, detailed information, e.g. spiral loop width and height, rudder angle of neutral effect. Samples of stable and unstable ship behaviour demonstrations will be shown by Fast Time Simulation using the SAMMON Planning tool.

The pilot boat Huron Spirit picking up a District 3 pilot from the downbound oil/chemical tanker Algoluna on the St. Clair River in Port Huron/Sarnia on March 9, 2024 as captured on the StreamTime Live Camera.
https://www.youtube.com/live/eLUGwEv9IBk?si=O_QyOD3sAMvp_SQd

Compilation clip highlighting some of the diverse custom boats Dongara Marine has built in recent years.