Also most multi engine offshore boats have a joy stick control coupled with the bow thruster for handling. Works the same as Penta's IPS or Mercs pods which is another step up. But hit the Seavee link and they have a one pod diesel 39 ft that uses that system also.

The traditional big battle wagons such as Hatteras or Viking ( let alone Jarret Bay / Spencer / Bayliss ) for offshore are in the millions range. You can do a center console for much less be it a 100k income is missing three zeros needed to afford one.