![File:Obstructions on mooring-lines to stop rats boarding ships. D Wellcome V0010706.jpg - Wikimedia Commons File:Obstructions on mooring-lines to stop rats boarding ships. D Wellcome V0010706.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/5/52/Obstructions_on_mooring-lines_to_stop_rats_boarding_ships._D_Wellcome_V0010706.jpg)
File:Obstructions on mooring-lines to stop rats boarding ships. D Wellcome V0010706.jpg - Wikimedia Commons
![Rat shields fitted to the mooring lines of a ship. The discs attached to the mooring lines of ships to prevent rats from boarding Stock Photo - Alamy Rat shields fitted to the mooring lines of a ship. The discs attached to the mooring lines of ships to prevent rats from boarding Stock Photo - Alamy](https://c8.alamy.com/comp/GDJJ3W/rat-shields-fitted-to-the-mooring-lines-of-a-ship-the-discs-attached-GDJJ3W.jpg)
Rat shields fitted to the mooring lines of a ship. The discs attached to the mooring lines of ships to prevent rats from boarding Stock Photo - Alamy
![Two US Navy (USN) Sailors assigned to the USS BLUE RIDGE (LCC-19) attach rat guards to the mooring lines, while the ship is docked at Sierra Pier, Guam during Exercise TANDEM THRUST Two US Navy (USN) Sailors assigned to the USS BLUE RIDGE (LCC-19) attach rat guards to the mooring lines, while the ship is docked at Sierra Pier, Guam during Exercise TANDEM THRUST](https://cdn10.picryl.com/photo/1999/03/25/two-us-navy-usn-sailors-assigned-to-the-uss-blue-ridge-lcc-19-attach-rat-guards-be2164-1600.jpg)