3. Optional: In order to ensure thruster mounting is not mixed up, it is recommended to apply short strips of masking
tape to the outside of the thruster ducts and labeling them 5,6,7 and 8 respectively according to the thruster
diagrams.
Thruster 5 (CCW propeller) with red penetrator nut.
Thruster 6 (CW propeller) with red penetrator nut.
Thruster 7 (CW propeller) with red penetrator nut.
Thruster 8 (CCW propeller) with red penetrator nut.
(https://www.bluerobotics.com/wp-content/uploads/2019/03/frame-numberings.jpg?x62571)