The 4,200-gt Badger (built 1953) will set sailagain on Lake Michigan on 16 May and should burn less fuel and produce lessash.
The upgrade has beencarried out at a cost of more than $1m, Ludington Daily News reports.
Operator Lake MichiganCarferry has been under pressure to cut waste from the ship.
The EnvironmentalProtection Agency requires it to reduce discharges this season and end thembefore the 2015 season begins.
The
