What if the RN decided to upgrade HMS Tiger to 15in guns?

The proposed gun change requires wider barbettes, and Tiger's beam is almost identical to that of the 15-inch-armed Queen Elizabeth class.

Displacement divided by approximate hull area supplies a rough comparison for judging whether Tiger could support heavier guns.

Tiger and the Queen Elizabeth class represent two British routes toward combining battle-line strength with high speed.

Trials speed, the 39-boiler plant, and deep-load stability provide the starting figures for Tiger's proposed machinery upgrade.

Queen Mary, German construction, and Japan's Kongo class explain why Tiger's designers invested in a heavier ship.

Tiger's heavy shell damage and rapid return to service provide a wartime test of the hull strength assumed by the refit scenario.

Tiger fits the treaty's broad tonnage and caliber ceilings, but the reconstruction clause forbids changing her main-gun caliber or mounting type.

Stored 15-inch mountings from the Courageous-class conversions provide the hardware for an eight-gun ship and weaken claims of panicked rearmament.

Subdivision and strong internal construction provide support for heavier external armor.

Transit-time arithmetic shows why fast capital ships served as a deterrent and rapid-response force for Britain's Far Eastern commitments.

Tiger left service in 1931 as treaty tonnage was cleared for a new generation, but delays postponed the King George V class and left a capability gap.

Field's longer tenure and preference for F3 provide a policy setting in which a faster, more heavily armed Tiger could make sense.

Strategic speed offered an alternative to expensive permanent forward deployment, while machinery limits constrained protection.

The criticism of Chatfield's treatment of Henderson raises a question about how command culture shapes autobiographical credit.

Backhouse and Field's interest in dispersed forces makes rapid reinforcement a reason to invest in fast capital ships.

Britain could seek either an exemption for work already begun or a treaty bargain that traded 16-inch prestige for 15-inch fleet commonality.

Treaty figures omit fuel and feed water, so Tiger's declared 28,500 tons can coexist with an estimated 39,000 to 40,000 tons at full load.

Oil firing and Nelson-era boilers could replace Tiger's 39-boiler plant with a much smaller, more powerful arrangement while freeing internal and deck space.

Tiger's 9-inch belt and original structural integration offer a different protection tradeoff from Hood's thicker but later-added armor.

Delayed replacement designs and Tiger's age and service condition support treating the 1918 refit as a possible start for rearmament.

Tiger provides the fourth hull for sustainable deployments and could join Hood on the Empire cruise after improvements to endurance.

Treaty partners might tolerate a conversion already under way rather than risk British withdrawal or a demand for another new capital ship.

Giving up 16-inch guns could let Britain use its remaining treaty allowance for a larger family of fast 15-inch ships derived from F3 thinking.

Using rebuilt Tiger as a gun test bed links the immediate conversion to British work on fully armored battlecruisers and fast battleships.

Seven or eight fast capital ships create a second operational battle line with enough depth for simultaneous deployment, maintenance, and deterrence.

More fast hulls free older ships for speed-focused modernization and give training fleets realistic high-speed raiders to hunt.

Tiger and several fast Nelson- or F3-derived ships would multiply the British hunters able to catch and outgun German Panzerschiffe.

A larger pool of 28-knot capital ships changes where Britain can accept risk and which heavy units can reach time-sensitive operations.

A proposed four-triple-turret arrangement shows how choosing 15-inch standardization could carry into a later battleship generation.

Carriers supporting the fast capital ships must keep pace with a formation advancing near 24 knots instead of the traditional 18-knot battle line.

Ceylon or western India offers a politically Eastern but operationally flexible base for the extra squadron created by a larger treaty fleet.