Not all wrecks appear on the Forum Interactive Map.
And not all wrecks will show up on your scanners. I believe the one in S-59 has to be visually sighted. Once you find it, it still doesn't show up on your Ship's scanners.
'I would like to be half as clever as some people like to believe they are' Life is full of disappointments, it is how we handle them that helps to define us, as a person