Marine drives having steerable gearcase

A marine drive comprising:

• a powerhead that causes rotation of a driveshaft;
• a gearcase that supports a propulsor for propelling the marine drive in a body of water;
• a steering housing disposed between the powerhead and the gearcase, wherein the driveshaft or an extension thereof extends through the steering housing is operatively coupled to the propulsor;
• and
• a worm drive configured to steer the gearcase about a steering axis relative to the steering housing,
• wherein the gearcase and steering housing are connected at a steering joint through which at least one of cooling water from the body of water is conveyed to the powerhead throughout steering movement of the gearcase and exhaust from the powerhead is conveyed to the body of water throughout steering movement of the gearcase, and
• wherein the steering joint comprises an annular bearing and further wherein the worm drive is coupled to the annular bearing such that operation of the worm drive in a first direction steers the gearcase in a port direction and such that operation of the worm drive in an opposite, second direction steers the gearcase in a starboard direction.