 Although torpedo boats have disappeared from the majority of the world's navies, they remained in use until the late 1990s and early 2000s in a few specialised areas, most notably in the Baltic.The close confines of the Baltic and ground clutter effectively negated the range benefits of early ASMs.Operating close to shore in conjunction with land based air cover and radars, and in the case of the Norwegian navy hidden bases cut into fjord sides, torpedo boats remained a cheap and viable deterrent to amphibious attack.