What a ride: Coast Guard boat is surfing in the mouth of the Duluth Canal

The Silver Bay Marina Cam views the tranquil harbor and docks for pleasure boats while also able to view the 1000 ft ore carriers entering North Shore Mining just to the east.
Boats up to 100' can be accommodated on a daily or seasonal basis in one of the 110 spacious slips.

From atop the Lake Superior Maritime Visitor Center in Duluth, these cameras provide one of the most intimate views of Duluth's Aerial Lift Bridge and Shipping Canal. Watch ships from around the world arrive and depart the Twin Ports as they traverse the cold waters of Lake Superior. The cameras are owned and operated by the Corps of Engineers' Lake Superior Maritime Visitor Center with funding from the Lake Superior Marine Museum Association. (technical assistance provided by...

Coast Guard air and surface rescue crews at Sector San Juan responded and assisted the distressed M/V Island Express Wednesday afternoon, after the ship started taking on water when it departed the Port of San Juan for storm avoidance in anticipation of Tropical Cyclone 9.

The "Sea Bear", (ex "Narrows") was built in 1959 in Massachusetts for use as a pilot boat in New York. Ed Montgomery, at Sea Service, LLC, bought her and brought her to the Twin Ports in September, 2002.

HamiltonJet unveiled its new Electro-Hybrid Drive (EHX) system – innovative technology that offers all the advantages of electric drive with the full capabilities of diesel.

This unique system delivers lowers fossil fuel consumption (reduced further when dock charging, as infrastructure allows) combined with the speed, manoeuvrability, efficiency and safety waterjets are renowned for.

This is the new Bermuda pilot/SAR boat 'St. David'. Its intended to operate up to 30miles off the island in the open north Atlantic but capable of going much further. She is a Gladding Hearn built, all weather 61' aluminum hull capable of about 30kts. She replaces a 23 year old pilot boat with the same name.

Pilot boarding submarine HNLMS Bruinvis at North East Spit pilot station.
Pilot Captain Chris Renault.

Using pictures and sketches, this video finally explains the difference between gross tonnage (GRT) and net tonnage (NRT); the ship spaces that are included/excluded in their calculation; and the importance of these terms to ship owners.
Contents of this video will benefit mariners preparing for exams (written and oral examinations).