In admiralty law, a forum-selection clause is prima facie valid.  It should be enforced by a district court sitting in admiralty.  A forum-selection clause will not be set aside unless the resisting party meets the heavy burden of showing inconvenience or fundamental unfairness, which is not present simply because the forum clause was not the subject of bargaining.[i]

[i] Roberson v. Norwegian Cruise Line, 897 F. Supp. 1285 (C.D. Cal. 1995)