How many heavy-gun ships could Britain bring to the alternate Jutland?

The alternative British force could include seven ships with 15-inch guns, HMS Canada with 14-inch guns, fifteen with 13.5-inch guns, and fifteen with 12-inch guns. The 12-inch total assumes that Indomitable and Indefatigable survive their earlier encounter with Goeben without lasting damage. HMS Dreadnought remains with the Channel force and therefore does not join Jutland. Australia also remains absent: adding her would require a separate change that prevents her collision with New Zealand. That extra change would raise the British force to thirty-nine dreadnought-type ships against twenty-one German dreadnought types and six pre-dreadnoughts, but it is excluded from the chosen scenario.