Instrumentation and equipment, namely, riser monitoring systems and motion logging pods comprising a processor, computer memory, transceiver, and motion sensors for monitoring the functioning, stability and condition of subsea risers, subsea structures and equipment, and for logging and processing of data from such systems and pods and for communicating data to external devices, none of the aforesaid in relation to MP3 players, music and/or video players and/or consumer handheld portable elec...