MB3 187a: Boating and Rafts on Shabbos (339:5-7)

(Getting married on Friday afternoon or Erev Yom Tov.)

Clearing away wood chips from a body of water.

Clearing away wood chips from a body of water.

Boarding a boat on Shabbos that is resting on the riverbed or tied to a dock. Using a small boat on Shabbos in a שעת הדחק.