Moving a 17th century praem

in holland in 1800-1900 the schips are moved by wind, by man/womenpower
or by horsepower.
most ships had a sail, with a good wind you could come to a place you
had to go, with a bad wind you had to wait.
that is a possibility when you have a lake or a see
in the netherlands there was the Zuiderzee, and in Friesland a lot of
lakes connecting the cities.
in Drenthe there are canals, and it will take a lot of time to wait for a
fair wind to sail on a canal,
so they towed the ship: the owner/skipper, his wife, his children or when he had enough
money he hired a person with a horse: de scheepsjager.

In north- and south-holland there were also passengerships, with
a steady schedule, no sail but towed by horses, owned by scheepsjagers. On the border of the canal there were special small
roads, where the horses could walk.

so "scheepsjager" was a profession.