Ships losing power is not uncommon, Columbia River bar pilot says

River Mersey Pilot Boat going slowly inbound on the river before turning and heading northbound again.

Escada usada pelos práticos soltou durante entrada do Maersk Letícia em Itajaí. Saiba mais: http://nsctotal.com.br/
Crédito: Reprodução, Redes Sociais
Container ship MAERSK LETICIA, IMO 9526916, dwt 106043, capacity 7450 TEU, built 2011, flag HK, manager MAERSK LINE A/S.

Apparently there were two crew members on board, but no pilot. One of crew was recovered and declared dead, another one, skipper of the boat, is missing.

A 35-year-old male sea pilot of the Transnet National Ports Authority (TNPA) fell into the sea from a crude oil tanker near the N Shed Wharf in the port of Durban. A rope of the pilot ladder is said to have snapped for an undetermined reason when the man disembarked while leaving the crude oil tanker which was leaving the port of Durban.

Occurrence Brief from the ATSB (Australia)

A Filipino crew member of a Capesize bulk carrier HELLASSHIP fell into water while trying to assist pilot boarding bulk carrier in rough weather, off Gijon, Spain.

They look like toy boats, but they serve a serious purpose. An outsider at this facility near Grenoble, France, may see grown men riding arounda lake in miniature ships. But these are pilots of the world's largest ships, and they're practicing navigation with meticulously engineered 1:25 scale models of real cruisers, tankers, and containerships. Port Revel Shiphandling Training Centre, in operation since 1967, has had more than 6,000 maritime pilots and merchant ship officers from all over...

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.