I've highlighted the common misconception. WW2 Corvettes were by no mean "fast" warships. 16ish knots or 30kph is all they were good for. Destroyers were good for about 40knots. Even cruisers and battleships were good for about double the speed of a Corvette.
I'll just add to those good thoughts Black 03. They could also possibly be for the pit crew and maybe even the lap recorders/counters to identify #28 at night.
Murray has got it!
Wouldn't hurt to have a second person with their hand on the blanket-padded hatch, to make sure it doesn't move upwards too fast.
I use a big towel folded over a couple of times to protect the hood of my AMX when I open the hood under the four post lift.
A sound I fondly remember is my helmet scraping and banging along the road... instead of my head and face. It was in the late '60s. I always kept that helmet on display after that.
The 2006 battery in my '77 Firebird Formula 400 just died this Summer. It was always kept on a maintainer unless I knew i was going to drive it again within the next few days.
The car, with battery installed, wintered in an unheated outbuilding on a friend's property.