Locating a destroyer's center of mass

Where should the center of mass sit relative to the waterline on a 1,100-ton destroyer?

The actual hull design and its stability behavior determine the position; there is no safe height that follows from displacement alone.

There is no universal center-of-mass height for a 1,100-ton destroyer. A narrow fast-attack hull and a broader cruising hull behave differently, as do V-shaped and U-shaped hull sections. A center of mass set too high creates top-heaviness, while the overall design must also avoid excessive motion. The suitable position depends on the actual hull and its movement in the water. A numerical height relative to the waterline therefore requires more design information than displacement alone.