A sacrificial Dardanelles role for obsolete battleships

What combat role could Fisher's retained obsolete warships perform?

Use them as sacrificial, minimally crewed minefield breakers at the Dardanelles, modified for buoyancy and rapid abandonment.

The proposal gives the old ships a deliberately expendable combat role as a leading wall through the Dardanelles minefields. It would minimize their crews, pack available volume with cork, and add torpedo bulges to improve their chances of remaining afloat after mine damage. Special stern boats would let the crews abandon ship quickly. Scuttling charges would ensure that a disabled hull could be destroyed before it blocked the passage for vessels following behind.