Specialist liability insurer for the international transport and logistics industry TT Club said it had another good performance for the year ended December 31, 2012, with further increased gross written premiums, and the club now maintains its A- (Excellent) rating for the past eight years. In a statement, U.S. rating agency A M Best reaffirmed the financial strength rating of A- (Excellent) and the issuer credit ratings of “a-” of Through Transport Mutual Insurance Association Limited (TTB) (Bermuda) and its subsidiary…