This Guide released by the Maritime New Zealand is fully dedicated to the stability of the fishing vessels. The stability is something which the life of every fisher depends on and that is why this is of the critical importance. The ship must always be kept safe abd stable. Even if the vessel is safe and complyin with all the applicable rules and regulations, poor operational decisions can easily cause it to capsize. The present publication was developed with the sole intention to help people better understand the key elements influencing ship stability as well as the critical hazards that fishing ships are exposed to. Thorough understanding of the factors that reduce stability will help them make the proper decisions and take the right actions to keep their vessels safe. The book is divided in two big parts - the first one explains the importance of stability while the second one addresses the stability hazards.