Methods and systems for controlling trim rate of trimmable marine devices with respect to a marine vessel

A variable speed trim system on a marine vessel, the system comprising:

• a trimmable device;
• a trim control user input configured to enable user input of a user inputted trim command;
• a variable speed trim actuator configured to rotate the trimmable device about a horizontal axis so as to adjust a trim position of the trimmable device;
• a controller configured to:
• receive a user inputted trim command instructing a trim adjustment;
• receive a vessel speed measured by a vessel speed sensor for the marine vessel;
• determine a trim rate based on the vessel speed, wherein the trim rate is a rate of rotation of a trimmable device about a horizontal axis;
• and
• control a variable speed trim actuator to rotate the trimmable device at the trim rate in response to the user inputted trim command.