Now i know what ya gonna say, the battleship is too small in scale.
Well your most likely right, thing is i looked at the album cover and followed
the line of the back leg(if you have the album, take a look yaself and you may see what i mean)
It actually comes down either on or on the far side of that headland/jetty thing right in the
background and close to that appears to be a small sailing vessel.

Giving a rough size judgement to the sailing vessel i would say
it's probably no less that about 30 or 40 feet to the mast top.
That being the case would make that back leg a couple of hundred feet high.
Since the album cover was the only referance i used, i went along with it.
My excuse so i'm stickin' with it.