Horizon Marine Service Company PO Box 371795  San Diego, Ca 92137     PHONE: 619-702-8500 FAX: 866-736-1461 E-Mail: HorizonMarine@hotmail.com Physical address (UPS, FED-Ex etc) 3748 Tennyson St, San Diego, CA 92107 Please no US mail to this address, use PO Box.