What is the term for securing a shackle pin to prevent loosening?

What is the term for securing a shackle pin to prevent loosening?

• A. Wrenching
• B. Mouse
• C. Locking
• D. Gasketing

Answer: (B)

Securing a shackle pin to prevent loosening is called mouse (mousing) the shackle. The idea is to lock the pin in place by using a short piece of wire or safety wire threaded through a hole in the pin or wrapped around the pin and twisted, so the pin can’t back out under load or vibration. This specific method is what boat crews refer to as mouse or mousing a shackle. Wrenching would just mean tightening with a tool, which doesn’t address keeping the pin from loosening. Locking is a general term for keeping something in place, but the specific practice described here is called mouse. Gasketing is unrelated, as it deals with sealing joints rather than securing pins.

Securing a shackle pin to prevent loosening is called mouse (mousing) the shackle. The idea is to lock the pin in place by using a short piece of wire or safety wire threaded through a hole in the pin or wrapped around the pin and twisted, so the pin can’t back out under load or vibration. This specific method is what boat crews refer to as mouse or mousing a shackle.

Wrenching would just mean tightening with a tool, which doesn’t address keeping the pin from loosening. Locking is a general term for keeping something in place, but the specific practice described here is called mouse. Gasketing is unrelated, as it deals with sealing joints rather than securing pins.