We carried out a screening study for production of a significant gas field offshore Angola. Due to the deep water location of the field and the clients preference for dry wellhead technology the development plan used Tension Leg Platforms as its basis. The field was assumed to be developed in three phases; two depletion phases with a combined production rate of 750 million standard cubic feet per day and a compression phase of 550 million standard cubic feet per day. The facilities also included the phased development of an onshore gas reception terminal. The development and operating cost estimates were generated using our NETCO$TER Cost Evaluation Software.