HMS Incomparable: When Jackie Fisher Dreamed to Big - Key Ships Series 4, Ship 8

HMS Incomparable embodies Jackie Fisher's belief in bigger ships as deterrents, while exposing how much his technological vision depended on other officers to turn it into practice.

The design problem is framed around rate of fire, ranging speed, and sustained weight of fire rather than the spectacle of mounting the largest possible gun.

The F3 alternative shows that Britain's postwar capital-ship choices included a conventional superfiring layout and a powerful new 15-inch gun rather than only the G3, N3, and Nelson arrangements.

Nine guns can be divided into repeated ranging groups, while a six-gun battery gives a slower-firing weapon fewer opportunities to correct onto a moving target.

A counterfactual on 1914 argues that Fisher would have made British readiness unmistakable to deter Germany rather than relying on diplomatic language alone.

The Grand Fleet is used to explore how several mutually supporting task forces might have made it harder for the High Seas Fleet to evade battle.

Thirty-five knots cannot protect a lightly armoured battlecruiser unless it can range, hit, and disable its opponent before heavier fire arrives.

Royal Navy studies of six- and eight-inch cruisers show how similar practical engagement ranges, higher rate of fire, and ammunition handling could outweigh nominal shell calibre.

The comparison with the G3 argues that nine faster-firing 16.5-inch guns and heavier armour may be more dangerous in practice than six 20-inch guns.

HMS Dreadnought combined familiar 12-inch guns with a doubled heavy broadside and flexible ranging groups, making her radical increase in firepower operationally usable.

Rangefinders and multiple control positions matter because a ship that finds and corrects the range first gains more from its guns than one that is merely faster.

Postwar British choices are presented as a trade between a heavily armoured 16-inch battle-line ship and a faster 15-inch ship able to operate with existing battlecruisers.

Moving beyond rigid battle lines required more than capable ships: navies also needed radio procedures, trained staffs, and personnel able to control a fluid engagement.

N3 and G3 embody divergent postwar roles: a heavily protected battle-line citadel or a fast ship designed to engage at range with a manoeuvring task force.

Six 15-inch guns remained balanced in the fleet that produced Renown and Repulse, but G3, N3, and possible twelve-gun successors would rapidly erode that balance.

The possible growth beyond G3 and N3 leads to a wider point about using commercial rules to make private maritime interests support infrastructure needed by the Royal Navy.

The Ultimate Admiral: Dreadnoughts experiment makes its compromises visible before comparing an Incomparable-like ship with a slower American battleship carrying many smaller guns.

The repeated game engagement illustrates why a fast, lightly protected ship cannot rely on speed after a slower battleship's larger battery has established the range.

The closing questions ask how an earlier return by Fisher, the absence of First World War combat experience, or a naval treaty delayed until 1930 might have changed capital-ship development.

A preview of a later strategist episode describes Holtzendorff's opposition to unrestricted submarine warfare and his view that Tirpitz's fleet policy had left Germany without enough weapons.