Hi jacksos101,
Traddles has answered well. As amplification, here is my answer to that question when it was raised some time ago:
Some of the boats in SS2008 are Jacuzzi powered. Red Jet is one, the water taxi is another. They have no rudders and, consequently, no steering without power.
The Jetski has no rudder either.
The hovercraft “rudders†are ineffective when the fans are shut down. That craft is usually steered with the forward thrust ducts because it has the dynamics of a hockey puck when steered with the fan diverters.
Ocean Star and Bugsier 2 are steered with azimuth drives.
Even those ships with conventional screws and rudders often have diminished steering without the prop wash over the rudders.
If you list those ships, other than those listed above, that you find have improper rudder response, we can deal with them specifically.
Regards,
Marty
Here is where you can download PDF manuals on the operation of AZ drives and the hovercraft:
http://80.95.161.114/shipsim/forum/index.php/topic,2886.msg28895.html#msg28895 (http://80.95.161.114/shipsim/forum/index.php/topic,2886.msg28895.html#msg28895)