Should the target ships have sat on a sandbank?

Should the target ships have been placed on a sandbank during the tests?

It was an interesting suggestion, but the rules prohibited creating navigation hazards. The targets were placed in roughly 100 fathoms of water.

Placing the ships on a sandbank was raised as an alternative test arrangement. The proposal received an interested response, but it conflicted with the rule against creating navigation hazards. The chosen targets therefore lay in roughly 100 fathoms of water.