Sydney Harbor Pilot boat

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.

Spotted some Pilot Boats in the Port of Auckland, New Zealand and Melbourne & Fremantle Australia (Port codes: Auckland:NZ AKL ; Melbourne:AU MEL ; Fremantle:AU FRE).

Vlaanderen is één van de drukste scheepvaartregio’s ter wereld. Loodsen assisteren schepen bij het aanlopen en verlaten van de havens in Vlaanderen. De bemanning van Vloot zorgt ervoor dat de loodsen aan en van boord geraken van de te beloodsen schepen. Op zee maken ze hiervoor gebruik van de Wandelaar, een SWATH en een jol.

In this breathtaking drone video, we bring you an up-close and personal look at the Pilot Boat Yellow Rose in action. Watch as the skilled crew expertly maneuvers the vessel through the water, guiding large ships safely into port. With our high-quality aerial footage, you'll get a bird's-eye view of the Yellow Rose in action, as she weaves through the waves, making precise turns and executing complicated docking maneuvers. You'll be amazed at the precision and skill of the crew as they work...

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...

Turkish Straits , Istanbul Strait , Maritime Pilot , www.turkishpilots.org.tr

Each pilot association and each country can get a good overview of how other colleagues approach safety.
Ship crews can see which rules apply in which country.
In any case, this list from IMPA is worth looking through and reading.