A Radial engine was used on old bi-planes - many (round)cylinders around one shaft - Rotary engines have a triangle type piston - not round. Instead of going up & down ,they move in a somewhat triangle circle.
The largest tsunami on record strucky Lituya Bay in a  remote portion of Alaska in 1958. It was overâ¦ 1,700 feet tall. The  meteor impact associated with the extinction of the dinosaurs is  believed to have generated a tsunami 3,000 feet to 1 mile tall.
Most tsunamis are not devastating. Scientists can and do measure tsunamis which are as small as a few centimeters. These events rarely make the news. The tsunamis which are 'devastating' are the very largest (and rarest) ones. What I think you really want to know is how far inland tsunami waves can go for the largest events with 10-1000 year recurrence intervals. (Civilization-ending events such as the Santorini eruption that destroyed the Minoan civilization are less frequent, while the biggest subduction zone earthquakes are generally one in 100-1000 years.