Didn`t have that on the Pearkes when I was on it, the Gordon Reid and John Jacobson had the stern ramp.
They're installed on all the 1100s including the Pearkes, as well as most of the larger ships.
The Louis was even fitted with one within the last couple years following near sinking of the Ann Harvey.
They're fantastic, you're in contact with the skate/hull the whole way up and down so you're swinging around in the air.
Takes up about the same footprint as regular single point luffing davit, its a bit higher to accommodate the skate
Here's a terrible video of one in action.
Its terrible because they skipped the launch completely, but you can see the skate hanging off the side of the ship after they launch (it can be left down or winches back up if the frc is going to be gone a while)
The lowering is controlled from the FRC by pulling the brake cable, much like launching a life boat from a davit, so winch operator is optional (for launch) and its extremely quick to launch, you can pretty much free fall if you want, with an offload release at the bottom.
Usually if we were on SAR standby we left them hung off like in the video (its a bit easier to get in/out, particularly if you've got casualties) but you can embark your full crew and launch from the fully stowed position as soo.
Really don't know why the navy never embraced them.
