Are you looking for nice waterproof boat servo?
here is some good choices for you.
XQ-S4013D 12kg~13kg torque 4.8V~6.0V(7.2V at most)
:applicable for 50cc around boats.
XQ-S4016D 14.5~15.8kg torque 4.8V~6.0V(7.2V at most)
:applicable for 80cc around boats
XQ-S4020D 17.2~21.8kg torque 4.8V~6.0V(7.2V at most)
:applicable for 100cc around boats
