It started with cars, why not boats? In watery environments Uber expanded into boating, istanbul is one of the places where this makes sense, and the services has operated since 2015. The service compesates for thes some of the traffic jams in the city. Booking takes place the Uber-way, by smartphone, and the boats can accommodate for 8 persons.
UberBOAT is in place in a number of other cities, for example Sydney, Amsterdam, Miami.