Yes, those two are for the single N01 found node on the boat, which is what "tells" the game what equipment is called for on the LinkName line to be mounted. Both should not have the same date, else the first encountered (Sensor 3) will lord over the 2nd, and reign supreme, not allowing the "NULL" to ever be used... Sensor 3 will be eliminated in the next version, and the remainder renumbered down...