Have certificates of airworthiness issued by negligence or fault; Second, in the certificate of airworthiness within the validity period may be as a result of new circumstances which led to the actual ship is not seaworthy. Sailing ship for a basic requirement is that the ship can withstand risk usually occurs in the sea. Sample to determine how often dangerous
Voyage, the carrier often is to decide whether the exemption is a key issue. "Hague Rules" Article  paragraph The exemption provided because "the sea or other navigable waters of the disaster, danger or accident." This is what we commonly referred to sea. Obviously, the ship for sailing ships are not required to be able to withstand such is the nature
Of the maritime force majeure. Therefore, the usual risks and must be clearly distinguished from the sea. For example, the North Atlantic in winter, the eight-, nine-level winds are common, and therefore can only be regarded as generally dangerous. Strait in Japan, the 89’s wind may be considered sea. Because 89 of the winds in the Strait of Japan is