The passage you provided indicates the history of two sunken wrecks located at LAT 43-02-39N, LONG 78-53-27W in Lake Ontario. The wreck was designated as LS1776/40.
During a hydrographic survey (H9889/80), one wreck, a beached barge, was located and found to be actually part of the shoreline, as shown on a NANCI sheet. The second wreck, although not specifically found, falls within a foul area of pier ruins and piles. Some of the ruins may be remnants of a wreck, but they cannot be distinguished from the other ruins.
Upon close examination by the evaluator, it was revealed that there is only a single wreck and numerous piles inshore of the wreck. Based on the survey results, the evaluator recommended charting a submerged wreck as shown on the present survey in LAT 43-02-40.8N, LONG 78-53-27W. The information was entered into the Marine Safety Manual (MSM) in September 1988.
This means that the location of the sunken wreck was reevaluated, and it was determined that there is only one wreck and numerous piles in the area. The updated location will be marked and recorded on relevant navigation charts for reference and safety purposes.
