It has the ability to move to the side, out of the way, and it has an easily replaced safety tube in case of an overload situation. A pin with a cotter ring holds the servo paddle which is removed and replaced by the much larger emergency rudder assembly. The stainless steel rudder is foam filled for strength and flotation. The hinge has a special tapered hinge pin to make it easier to mount at sea. The pendulum is locked and supported by a wedge between the pendulum and the strutguard.
Spectra lines add extra support for front and side loads, just the way a mast is stayed.
The M RUD is similar to your life raft. We hope that you never have to use it, but if you do it will be the most important piece of gear on board. A boat without a rudder is a serious matter and these instructions are intended to make sure that your M RUD is understood and used properly in the event of rudder failure on your boat. Should the installation become necessary, you may be in rough seas. If you practice putting M RUD on in port, it will be much easier to repeat the installation later at sea.