How was the standard M4 waterproofed? This photo of Lucky Legs II from Bougainvile is the tank I am wondering about.

http://www.worldwarphotos.info/wp-content/gallery/usa/tanks/m4-sherman-tank/37th_Division_and_M4_Sherman_Lucky_Legs_II_on_Bougainville.jpg

According to the tank commander, they had just landed and were removing the waterproofing when there was a Japanese counterattack. They had pulled the tape and tar off the turret which is why the lower half of the star is visible-the top still has the tar on it.

Russ,

I think this picture a little further along in the same set seems to show some of what you asked about:

http://www.worldwarphotos.info/gallery/usa/tanks/m4-sherman-tank/m4-tanks-with-deep-wading-kit-italy/

HTH

Thank you, Jeff. That is what I was looking for.