This paper presents the development. of a model of the marine oil tran
sportation in the United States. NMOTSM, the National Marine Oil Trans
portation System Model, is a high-level strategic decision-making tool
that will be used to systematically identify causes of oil spills and
prioritize oil pollution R and D needs for prevention and response. T
hree distinct phases in the analysis are identified, namely the formul
ation of the oil transport model, the risk and safety performance asse
ssment and the evaluation of potential prevention, and response measur
es and approaches. (C) 1998 Elsevier Science Ltd. All rights reserved.