The dock chain barrier system creates a safe environment for both personnel and products. The steel constructed double chain adds extra security for door up to 10'. Unit is designed with a bolt on chain hook-up enabling quick installation or removal. The chain can be cut to a specific size upon request. The barrier system includes (2) two bollards, (2) 127" long chains and (1) one bollard conversion kit. The conversion kit includes four (4) bollard mounting brackets, (16) self tapping sixteen screws, (1) post unfoldment bracket, and (4) four quick links.