Most Pre-dreadnaught Battleships couldn't elevate even their lightest guns, above 25 degrees from 0.
What if, a fleet was accompanied by a modified supply ship that could transport and resupply a single, docked, helium zeppelin? The first aircraft carrier, if you will! The zeppelin would mount a single, light naval gun in the gondola, (like a 6 pound Hotchkiss) which the crew would use to blow holes though the weak super structure and deck armor of enemy ships from aloft. After a brief short range flight, the zeppelin would return and dock with the supply ship to refuel and rearm. No one would stay in the airship for an extended period of time. Think of it as a short range bomber.
I would guess a feasible time-frame for this strategy would be from 1900-1905. Is there any plausibility to this idea or is it all blowing in the wind?