Datenight
Guru
I bought my second Penn Yan tunnel drive new in 1977 and still own it.
Add me to the list of Penn Yan owners. Mine was a 1973 23' Fly Bridge model. One of my favorite boats.
Rob
I bought my second Penn Yan tunnel drive new in 1977 and still own it.
Add me to the list of Penn Yan owners. Mine was a 1973 23' Fly Bridge model. One of my favorite boats.
Rob
The landing craft of WWII had tunnel drives. I occasionally ran a later version, the LCM-6 capable of carrying 34 tons or 80 troops. Because they're bulky, handling is slow but they rotate fine. Usually max continuous rpm was used in rotation. With a full load, rotating 90° took about 5-10 minutes.