Nautical instruments, namely, sonar emitters and detectors, echo sounders, underwater sound velocity probes, underwater digital data transmitters, user interfaces for navigational controls, and nautical computers and computer software for navigation, underwater communication and underwater detection of objects

Photographic and video cameras; optical inspection apparatus, namely, micro- scopes, periscopes and lenses used therewith; and sonar devices, namely, sonar buoys, sonar detectors and sonar generators