Merc XS Ad from 1976
featuring Hydrostreams - Page 1
Merc XS Ad from 1976
featuring Hydrostreams - Page 2
Cover from APBA's Propeller
magazine from June, 1976. This picture shows the start of a heat
in the FS class. This class required long shaft engines and two
people in the boat. It also specified the propeller shaft
height relative to the bottom of the boat.