More detail at
https://shipmar.com/divisions/harbour-and-terminal/pilot-1350/
Vessel name: Polaris ; Year built: 2012 ; Flag: Netherlands ; Homeport: Rotterdam Length: 81.2m X 13.3m ; GRT: 2501 ; Callsign: PBZN ; MMSI:245142000 ; IMO: 9496915 Type: Special Vessel / Pilot Ship A "Pilot Ship / Pilot Vessel" is a "special type" of ship in which it accommodates a certain and limited Marine Pilots (Sea, River, Harbor Pilots), it also carries small boats/crafts that are used to tender services to and from the Pilot ship. In a Pilot Vessel, the Pilots can take their time...
The Puget Sound Pilots’ mission is to ensure against the loss of lives, loss of or damage to property and vessels, and to protect the marine environment by maintaining efficient and competent pilotage service on our State’s inland waters within the Puget Sound Pilotage District. The members of the Pilots are highly skilled, specially trained vessel captains who board oil tankers, cargo vessels and cruise ships to guide them safely through Puget Sound waters. The pilots are independent...