Pilot boat approaches Carnival Splendor off the coast of Victoria, Canada

Here's a nice little video of sea trials during the recent unseasonal storm we had last month, which produced some pretty rough conditions at the entrance to Cork Harbour. We managed to capture some nice footage of the Barracuda and Thunder Child II on the day.

HURON SPIRIT / PILOT BOAT - Downbound Passenger & Guests Photo Op Touch and Go Along Side Dirk S. Van En Kevort / Michigan Trader On The St. Clair River At Port Huron, Michigan.
HURON SPIRIT / PILOT BOAT - Downbound Demonstrating A Touch And Go Along Side The Dirk S. Van Enkevort / Michigan Trader For A Photo Op With Special Guest Onboard on the St. Clair River At Port Huron South of the Blue Water Bridges.

SUMMARY A New York harbor pilot boat passes close enough for four members of the crew to be seen [Frame: 0471]. Following the sailing vessel is a steamship [0780]. From a contemporary Edison Company catalog: PILOT BOATS IN NEW YORK HARBOR. Unboys [code for telegraphic orders]. A close view of an eighty footer, schooner rigged, trim as a private yacht, skimming over the waters of the harbor near Robin's Reef, [where a] picturesque little lighthouse is seen in the near background. A steamer...

Drone footage from King's Lynn.

The vulnerability of GNSS in shore-based use is definitely different and to be regarded as much more risky than on the high seas.

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A handy and simple tool to determine in a minimum time what is really needed as tug assistance, is the Bollard Pull Calculator which calculates in an approximate way the total required tug power for ships in various conditions of wind and current. This tool can be loaded as an app on the smart phone.

Son los encargados de asegurar el dinamismo en el puerto, de que las embarcaciones fluyan sin generar ningún problema. Velan por la estabilidad tanto de los barcos como de la ciudad. 'En la piel' sube al barco para ponerse en la piel de los prácticos del puerto.