Pilot Boat "Puffin" at Yarmouth

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.

This is the Ben Madigan pilot boat, one of the hard working fleet of Belfast Harbout pilot boats. ( I'm not sure but I believe this might be a Redbay Stormforce, built by Redbay boat builders at Cushendll. )
These fast, sturdy, boats have to ferry Belfast pilots out to large vessels coming in to Belfast harbour. Piloted vessels range from large tankers, bulk carriers, container ships, ferries and cruise liners, right down to barges and fishing boats. Not only this, Belfast Harbour pilots...

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.

Unless you were paying attention on your last cruise, you might have missed the pilot boat bringing the pilot out to your cruise ship.

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

The Canadian Hydrographic Service (CHS) wishes to promote the implementation of the new S-100 standards to provide mariners with access to additional information (bathymetry, surface currents and water levels) and greater versatility in the display of these data.

Another very good explanatory video by Knud Benedict. Absolutely worth seeing.
Yaw Stability is an important element of Ships Manoeuvrability - both for course keeping and turning ability. This first video in a series explains the Basic Principles of stability in steady state equilibrium conditions and the forces / moments involved