Here is one manufacturer of such drives—chosen for the pretty pictures.
http://www.brunvoll.no/public/cms.nsf/$all/74A53A90C6168904C125741A002C8D5E?open&qm=wcm_1,2,2,2 (http://www.brunvoll.no/public/cms.nsf/$all/74A53A90C6168904C125741A002C8D5E?open&qm=wcm_1,2,2,2)
Javelin has a Wartsila FS225-240/MNR rated at 1700 KW