Horizon Offshore subsidiary HOC Offshore S. de R.L. de C.V. has received a letter of intent from Pemex for the engineering, procurement, and construction of several pipelines in the Bay of Campeche. Horizon will lay and trench pipelines ranging in size from 10-in. diameter to 24-in. diameter and will perform one shore approach, end connections, topside piping, and testing. Offshore construction is scheduled to begin in 2Q 2004.