9 Electrical and scientific apparatus, namely, nautical devices, namely, safety nets and life preservers; surveying devices, namely, surveying machines and instruments, as well as sounding devices used to discern the locations of vessels and platforms; photographic devices, namely, cameras and digital image recorders; optical devices, namely, optical cables; weighing devices, namely, scales; measuring devices, namely, tapes, markers and light emitting devices used for measuring objects and distances; signaling devices, namely, signal buoys; monitoring devices, namely, audio and video monitors; supervision devices, namely, telescopes, long-range sounding devices, and transmitters and receivers used to monitor audio and video signaling devices; and computers and processors therefore, namely, central processing units; apparatus and instruments for controlling ships, namely, apparatus and instruments for monitoring and recording weather and operating conditions, and for transmitting and receiving orders and instructions relating thereto; and computers and computer programs for use in the fields of energy exploration and production, namely, software for evaluating and recording subsurface topography, and for tracking the acquisition, loading and unloading of seagoing vessels