All the big boats I have sailed on kept their anchors (plural!) on the bow rollers and their chains in their chain chambers located very far fore.
In our small boat (only 26' deck
and very fine entry) we too kept our bower on the roller and the chain in a small locker just at the bow (even worse: above the waterline!). Not quite sure where else we could store them (unless the anchor
were foldable). Anyways, I would not like carry the bower and the chain all the way back to the (possibly wildly rolling) deck
should I need to use them during an emergency
So that's how it is in our case.