While there isn't a single official "Ship Handling Simulator" that is permanently free for PC, there are several high-quality simulators available through different platforms: Popular Ship Simulators for PC Ship Handling Simulator (Steam)
A hidden gem completely free. You take command of a harbor tugboat, pushing and pulling massive container ships into their berths. The physics focus is on low-speed maneuvering and line-handling. Ship Handling Simulator PC Game Free Download
For the best experience, use a USB gamepad or even a basic flight joystick. Mapping throttle and rudder controls to analog sticks makes docking infinitely smoother than using a keyboard. While there isn't a single official "Ship Handling
Realism and practicing technical maneuvers like berthing. and often updated by maritime enthusiasts.
The open-source community has produced impressive ship handling software. These are completely free, legal, and often updated by maritime enthusiasts.