KITTIWAKE ( MMSI 232008570) is a Pilot and currently sailing under the flag of United Kingdom (UK) Here she is speeding down the River this morning.

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...

Manouvring of entry in Mangalia Shipyard in dry -Dock.

Footage from Iran

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.

Pilot boat with over 2000 engine hours of operation in tough operating conditions.
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Embarcación ligera apropiada para realizar trabajos auxiliares de puerto, con gran capacidad de maniobra, seguridad y velocidad.

Ships don't exactly have brakes. Lou Vest, a retired Houston ship channel pilot tells us about a close encounter between a ship and a barge.
https://houstonmaritime.org