Ryan remains on his perch as it proves to be a valuable vantage point and immediately uses his vertical advantage to open fire in an attempt to pick off targets such as gunners and helmsmen before they get in range to use heavy weapons.
You hit one man on one of the two RHIB boats that are approaching. It turns back.
The second one holds its course. This one has troops aboard.
The "carrier" ship with the RHIB boats falls in behind the cutter. The deck gun is pointed at the cargo ship, probably waiting to fire on the PT.