Wet brake system and method of operating a wet brake system

A wet brake system, comprising:

• a housing enclosing a brake compartment configured to hold a liquid,
• at least one friction plate rotatably disposed within the brake compartment,
• at least one separator plate disposed within the brake compartment, coupled to the housing and configured to be frictionally engaged with the at least one friction plate for braking the at least one friction plate, the at least one friction plate and the at least one separator plate configured to be at least partially submersed in a liquid held within the brake compartment, and
• a liquid reservoir in fluid communication with the brake compartment via a drain channel, the drain channel ending in a drain port disposed in the brake compartment,
• wherein the drain port is arranged such that the at least one friction plate when rotating is configured to convey liquid held within the brake compartment to the liquid reservoir via the drain port and the drain channel for draining the brake compartment.