What a prepared 1916 Dardanelles assault required

Would Nelson-type battleships armed with 15-inch guns in 1916 have changed the Dardanelles campaign?

Only as part of a concentrated, prepared assault; repeating the piecemeal historical approach would still fail.

Advance warning and the historical stop-start method would still produce failure even with stronger ships. A viable alternative would prepare pre-dreadnoughts with bulges and reinforced forward compartments, send them through mine danger in successive lines, and keep troops ready to seize forts and press toward Constantinople. Fifteen-gun Nelson-style ships could strengthen that force, but organization and surprise matter more than the headline design. The exchange treats Dardanelles as an operational-system problem rather than a simple shortage of battleships.