Royal Navy commanders known for personal marksmanship

Which Royal Navy admiral had the best personal marksmanship?

Jellicoe and Hood are the leading First World War suggestions, while Tyrwhitt, Collingwood, Duncan, Vian, Harwood, and Michael Clapp are considered across other ranks and periods.

The answer tentatively places John Jellicoe and Horace Hood among the strongest First World War candidates, with Commodore Reginald Tyrwhitt also mentioned. For earlier periods, Cuthbert Collingwood and Adam Duncan are described as formidable with rifles or pistols. Philip Vian and Henry Harwood enter the Second World War comparison, while Michael Clapp is singled out for the Falklands era. The result is a period-by-period shortlist rather than a claim that surviving evidence can establish one definitive winner.