Pilot Boat "Charlevoix" in action (Canada)

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).

pilot boat is a type of boat used to transport maritime pilots between land and the inbound or outbound ships that they are piloting. Pilot boats were once sailing boats that had to be fast because the first pilot to reach the incoming ship 

HURON SPIRIT - PILOT BOAT - Upbound On The St. Clair River Heading Into Lake Huron, To Pickup A Great Lakes Pilot From The JAMNO - POLSTEAM, Passing Under The Blue Water Bridges At Port Huron, Michigan.

With a long tradition in building high performance vessels using composite material Hart Marine now produces some of the finest pilot boats available. European Design. Australian built. hartmarine.com.au

Awesome drone video from Latvia

A study of increasing competition in ports and the underlying pressure to improve port performance. This thesis is the final deliverable for the completion of the degree of Master of Science in Transport, Infrastructure and Logistics (TIL) at the faculty of Civil Engineering and Geo-sciences at the Delft University of Technology.

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.