This practical guide explains what is involved when navigating in high latitudes in winter. To be able to operate consistently it is necessary to have an understanding of: ice formation; ship strength and ice class; passage planning; navigating alone; navigating in convoy; maneuvering in ice; ice breaker operations; hazards and precautions. The book then is divided logically into chapters to assist the reader in preparing for a voyage where the charter lists an ice bound port. The first chapter covers voyage preparations and includes valuable check lists to equip the ship for 'winterization'. The second chapter covers 'ice at sea and is well illustrated with examples of different ice conditions and what to look for visually and on radar by day and night. The chapter explains why it is important to avoid getting beset in ice and the techniques which can be applied to break free. The next chapter covers ice breaker assistance and examines ways of assigning priorities; the signals used; breakout techniques; escort work; following ice breakers; towing; overcoming hazards; operating in convoys; speed control and engine performance. The final chapter covers berthing and unberthing and explains the hazardous effects of ice which can become trapped between the ship and the quay. The text is fully illustrated with line diagrams and color photographs which are well chosen for their relevance and usefulness. The book is supported by comprehensive annexes which cover government warnings and advisory notices; meteorological data; types of ice; ice class and certification; ice breakers' specifications; bollard pull and towing calculations; and ice breaker dues