Put an object (for a pivot) in the same position as the ship you want to rotate slowly. Point this pivot object to where you want to go. Then use the curve angle command to make the ship turn to the directin of the pivot at a set speed.
e.g:
rem ships gradual rotation
position object 11,object position x(13),object position y(13),object position z(13)
point object 11,object position x(21),object position y(21),object position z(21)
xROTATE OBJECT 13,curveangle(OBJECT ANGLE x(11), OBJECT ANGLE x(13),10000.0)
yROTATE OBJECT 13,curveangle(OBJECT ANGLE y(11), OBJECT ANGLE y(13),10000.0)
zROTATE OBJECT 13,curveangle(OBJECT ANGLE z(11), OBJECT ANGLE z(13),10000.0)
object 11 = Pivot
object 13 = Ship
object 21 = Destination
Infra-Dark
