When forced draught entered Royal Navy boiler practice

When did the Royal Navy introduce forced draught in its boilers?

It appeared during the 1890s, with a reporting or counting change around 1903.

Forced draught began appearing in Royal Navy boiler practice during the 1890s. It allowed machinery to produce more power by driving additional air through the furnaces, but the resulting figures could blur normal and exceptional performance. Around 1903, the Navy stopped treating forced-draught output in the earlier way. This change matters when interpreting period speed and horsepower claims because published figures are not always directly comparable.