During a recent tour of duty with a Naval R.O.T.C. Unit, I was confronted with the necessity of replacing an existent spotting board which had deteriorated beyond the realm of possible repair. Furthermore, the board was not entirely satisfactory in that cotton splashes were located manually and it was desired to obtain a board that could be more easily operated. The only information obtainable locally on the subject of electro-mechanical spotting boards was the following which was not entirely adequate.
Various ingenious devices have been developed to take the place of the deck spotting range, and to improve upon it. These usually consist of a table or raised platform representing the sea area adjacent to the target, and a mount for the spotter’s glass, placed at a proper distance from the target, and at the correct height with respect to the plane of the spot board. The splashes are usually arranged so as to be operated electrically or mechanically, simulating as far as possible the actual rise and fall of splashes.