Submarine Radar Contacts

1978 onboard the same submarine, Nicholas was tasked to be a Radar operator, monitoring contacts and alerting the Officer of the Deck (OOD) of any threats by other vessels and to calculate how close they might come to the ship. Using charts, ship's speed and course, and at least two relative points from the radar, and a set of parallels, technicians were able to calculate the “closest point of approach” (CPA) of a vessel. Doing this process manually, a good radar tech could give the OOD this information in about 1 to 2 minutes. Utilizing a set of formula on a Texas Instrument TI-59 with a mag card reader, Nicholas programmed in the formula and was able to give the CPA, course, speed and time of CPA in about 10…
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