There are two combined reasons that work in unison to create Propwalk. And they are not what you might think. The two effects are the p-factor and the wash-lift factor.

The Automatic Identification System (AIS) is an automated tracking system used on ships and by Vessel Traffic Services (VTS) for identifying, locating, and tracking vessels.

For an emergency to take place, an event must have happened. Many of these events can be avoided through proper seamanship and knowledge as well as proper checks and crew briefing for each outing.

When it comes to collisions, while we are taught to believe speed is the sworn enemy of docks and other boats, actually it is momentum rather than speed that the docks should be shivering in the pilings.