Standard trading limits for ships not engaged in regular services. Used in hull insurances, the warranties mainly restrict navigational areas as without them the underwriter risks granting cover unwittingly in hazardous areas worldwide. Breach of warranty is held covered, subject to payment of an additional premium and any change of conditions imposed by the underwriter. Five warranties spell out restrictions on areas as to times of year when restrictions apply while a sixth restricts the carriage of Indian coal in terms of both time and place.