In this work, an analytical solution of the well-known problem of ferrying a boat across a river is
obtained. A problem has been solved in which, when the boat is moving, its nose is always directed to the pier, located
on the opposite bank of the river. When moving to a reference frame associated with the river, this problem is solved
similarly to the problem of the motion of an infrared-guided torpedo, which is fired to hit a ship moving uniformly and
rectilinearly. Another similar task about the meeting is given in the well-known problem book on general physics by
I.G. Irodov, where an original indication for its solution is given. Earlier differential equations describing the motion of
a boat and a torpedo were solved by us numerically by the Euler method.