* '''2017-01-10:''' Became '''improvable''' and '''upgradeable''' to {{Equipment/Link|New Model High Temperature High Pressure Boiler}}, ability to [[Improving Ship Speed|increase ship speed]] added | * '''2017-01-10:''' Became '''improvable''' and '''upgradeable''' to {{Equipment/Link|New Model High Temperature High Pressure Boiler}}, ability to [[Improving Ship Speed|increase ship speed]] added |