Inaccurate performance data for BOB fighters in COD comparing to RL data

[Seadog]

There are several errors in the above excerpt. The Merlin X had a two stage SC and was not a Merlin III modified to run on 100 octane.

British Tanker losses in the first year of the war were quite low.

OTOH, it shows clearly that the Merlin III could be run for long periods of time at 12lb/3000rpm. 10 hours in 1938 engines and 20 hours in later engines.