What does the Kreigsmarine look like if it goes all diesel powered & Scharnhorst framed?

Combining diesel propulsion with a common Scharnhorst capital-ship hull changes the fleet available in 1939 and limits how far events can be predicted.

Compare the Deutschland class's diesel endurance with the higher top speed and shorter quoted range of Scharnhorst.

The proposed shift redirects effort from advanced steam machinery into larger marine diesels and gearing.

Naval diesel use is proposed as a way to reduce fuel competition with the army and Luftwaffe.

The quoted fuel balance leaves little spare diesel, but a common supply would let the navy choose which ships to operate.

Historical H-class and Z51 machinery work supplies the starting point for an earlier diesel fleet.

Earlier diesel machinery would widen the uses of German destroyers in 1939 and during the Norwegian campaign.

Separate surface-diesel, submarine-diesel and steam programmes frame a proposed change in research priorities.

Small cruising-speed differences accumulate over days, while additional fuel endurance enlarges the area a raider can reach.

A critical comparison of German admirals introduces the conflict between fleet prestige and using Germany's available strengths.

The scenario requires Raeder and Dönitz to favour operational efficiency more consistently when balancing capability against prestige.

Prewar advocacy of diesel battleships and battlecruisers is linked to German fuel access and engine development.

Reduced fuel rivalry is proposed as a way for the navy to gain room to bargain between the army and Luftwaffe.

The supply case includes producing diesel from coal and concentrating fuel production on the navy's chosen requirement.

Compare the manufacturing and operating demands of steam machinery with the different redundancy offered by multiple diesels.

A geared installation lets a ship disconnect engines and choose how many provide power to each shaft.

A fleet of long-range ships would widen the Royal Navy's search problem, especially if raiders could replenish overseas.

The common-hull proposal asks whether several fast capital ships would serve Germany better than a smaller number of larger designs.

A small family of hulls is proposed as a way to concentrate scarce German design and construction expertise.

The construction estimate uses repeated Scharnhorst hulls and avoids preparing slipways for successively larger battleships.

The armament proposal retains the initial 11-inch installation while allowing later ships to use twin 15-inch turrets.

The projected build programme produces alternative mixes of carriers and fast capital ships, with completion dates left uncertain.

A simple division of fuel between outward passage, operations and return explains why extra range matters after an Atlantic breakout.

Six 15-inch guns are assessed against trade warfare and possible French or Russian opponents, rather than an assumed decisive battle with Britain.

A carrier and two fast capital ships would combine reconnaissance, air attack and surface protection to choose which convoys to engage.

Simpler capital-ship requirements are proposed as a way to create more threats for Britain's fast battleships to cover.

A Scharnhorst-sized carrier could carry the proposed air group, but its aircraft-handling systems would still have to work together.

Greater destroyer endurance would support Atlantic raiding groups and address the fuel constraint illustrated by Narvik.

The destroyer debate leads to a wider procurement question: does an attractive capability meet the purchasing navy's requirements?

Destroyers designed around coastal operations would restrict a fleet intended to send surface raiders into the Atlantic.

The greater operating radius raises an Iceland scenario that would change Allied convoy protection and amphibious priorities.

Seven German fast capital ships and three carriers would make pauses in British battleship and carrier construction harder to justify.

A German carrier programme could influence French procurement and Mussolini's priorities through strategic concern and prestige.

Additional German carriers and fast capital ships would change British choices before and during operations in Norway.

German diesel projects provide assumptions for a wargame that tests how a long-range task group would affect the North Atlantic.

The simulated raiding threat competes with other British deployments and changes the construction and disposition of Allied fleets.

A criticism of Churchill's planning connects attractive ideas with the limits of the people expected to carry them out.

One wargame run illustrates the reach of a diesel raiding force and the replenishment system that kept it moving.

One tested British response uses diesels for cruising and turbines for high speed in a hypothetical Lion-class battleship.