The Kahlenberg KB-12 Manual Ships Bell is built to withstand decades of use in commercial and military marine service. With the exception of bronze bushings in the operating mechanism, the KB-12 is built entirely from stainless steel including the mounting bracket assembly. Manually operated with a stainless pull lanyard, the KB-12 Bell is a simple but effective solution to meet International IMO and COLREG requirements for a bell sounding at a minimum of 110 dB(A) on all vessels over 20 meters in length.