The difference between Gross Tonnage and Net Tonnage

Shipping has evolved significantly over the years. Research in maritime safety and operations over the past few decades has been intensive and has resulted in significant improvements.

At sea, space technology is used to help save lives every day: managing traffic between ships, picking up migrants and refugees in distress or spotting oil spills. The European Space Agency is once again at the forefront developing new technologies and satellites: to keep us safe at sea and to monitor the environment. Space makes a difference here on Earth and certainly at sea where there is no infrastructure.
Recommendation by Marine-Pilots.com
AIS services are offered by, for example:

Manoeuvring large ships at close quarters and on shallow water is one of the most difficult aspects of shiphandling because of the complex hydraulic interactions depending on the ships' speeds, on the water depth and on lateral restrictions like in canals. Training is conducted both on meeting and on overtaking ships in shallow waters. This video shows how overtaking in a canal can easily fail.
More information: http://www.portrevel.com/3781-shiphan...

How GPS works? Trilateration explained

The Seminar aims to inform Member States, intergovernmental organizations and non-governmental organizations in consultative status with IMO about the societal value of maritime pilots and pilotage as a public service. The IMO Secretary-General has recognised maritime pilots as having always been vital to ensuring the safety of navigation in key ports and shipping lanes globally and playing a crucial role in sustaining the global supply chain using specialized knowledge and expertise....

The Port of Waterford is to invest almost €1m in a new pilot boat to be named Port Láirge, which as Irish for Waterford is a name long associated with a steam-powered dredger that served Waterford for more than 70 years until the 1980s.

At 244 meters long, 42 meters wide, made up of 57,000 tons of steel and carrying approximately $41 million dollars’ worth of cargo, when the personnel at Teesport bring the Agathonissos – and vessels like her – into dock, there’s no room for error.
Watch this video to see how SafeTug helps to simplify this complex process, giving tug skippers, ship pilots and port personnel the vital information and situational awareness they need to bring her in safely.

Suez Canal, Egypt
LS. Ship on Canal. Various shots of Russian Red Pilots, walking along quayside, having conversation continuing their walk, looking in a manual, before boarding launch. MS. Pilots on launch, flag flying. Panning shot of Tanker. Various shots, looking up at men on tanker deck, man climbing up a rope ladder onto deck. (F.G.)
FILM ID:2556.13

In early December, just as I was starting to get into ship spotting, I saw a couple of vessels headed up river towards Philly. One of them, the Cielo di Iyo met with the harbor pilot right as I had my drone up. I was able to capture the Pilot coming to meet the vessel and CLIMBING the ladder to get on board just before she passed beneath the Walt Whitman Bridge.

When I was a deck officer back in the early nineties I worked on a ship that used to load grain at different ports along the Mississippi river. The name of the ship was Golden Hope, a 600 feet long dry bulk carrier with a 95 feet in beam. An average size vessel for those days' standards.