And Clone that is the old drawing.
...which has the same masts...
The bit at the bow yes, it is for mainly two reasons one of them slightly suicidal at best the first reason is there is a mini ice-age going on and sometimes the north sea might freeze but not enough for an icebreaker to be needed
Then explain why countries like Finland, Sweden, Norway, Iceland, etc. have more IB's than BB's, even during the early 1900's. A battleship (or other types of warships) is not intended to be used as an icebreaker, that's why IB's remain a separate class of vessels. If you wanted and Icebreaking warship, you would mount guns on a big icebreaker.
the other reason is as pure and simple as ramming I know it's a rather outdated form of attack.
If you know it's a rather outdated attack, why would you incorperate it? Ramming was considered a last ditch effort, even on vessels specifically designed for it (infact, the HMS Polyphemos had a bow mounted torpedo known as the "Suicide torpedo"). All the crazy ideas of ramming ships into each other had pretty much died out by 1910. If you think about it, a battleship is ill suited for a ramming attack anyways, it's big, slow, difficult to manuver, and expensive.
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"If people never did silly things nothing intelligent would ever get done." ~Ludwig Wittgenstein