Training Manual . — L. LGMI . Published by LPI, 1987. — 78 s. The definition of the mathematical model is given and their main types are characterized. The principle of simulation modeling of oceanological processes is presented and methods of implementation of mathematical models are considered: analytical exact and approximate, finite-difference numerical, statistical. The principal aspects of modeling of wind waves, long-period level fluctuations, circulation of sea waters, temperature and salinity fields . An idea of the marine system and the principles of modeling its state. The manual is intended for undergraduate students of the oceanic specialty. Foreword by . Mathematical Models of Ocean Processes . Methods of implementation of mathematical models . Modeling of basic hydrological processes. Principles of modeling of marine systems . Conclusion. Literature.