optional, single

—

Within <greatestdepth> the greatest depth in metres reached during a specific dive is put into brackets (not the maximum reacheable depth at this dive spot — see <maximumdepth>!).

<dive>

—

<dive>

<dive>
    <!-- other dive data -->
    <!-- greatest depth reached during this dive -->
    <!-- (the maximum reacheable depth at this site could be 60 m for example -->
    <!-- and would be put into brackets within <maximumdepth> inside <sitedata>) -->
    <greatestdepth>48.5 </greatestdepth>
    <!-- rest of dive data -->
</dive>