'Warspite' (a former two-decker reduced to a frigate) was a training ship for the Marine Society from 1862 but, until lost to a fire in 1876, was moored off Woolwich not Greenwich: so was its successor of the same name. It is more likely that the vessel shown is the Leda-class 46-gun frigate 'Fisgard' which from 1848 was the Commodore's guardship at Woolwich but also used to train engineers up to 1862, a function taken over the the Royal Naval College at Greenwich from its inception in 1873<sup id="cite_ref-1" class="reference"><a href="#cite_note-1">[1]</a></sup>.
<bdi><a href="https://en.wikipedia.org/wiki/en:Claude_Thomas_Stanfield_Moore" class="extiw" title="w:en:Claude Thomas Stanfield Moore"><span title="Landscape painter from Nottingham (1853-1901)">Claude Thomas Stanfield Moore</span></a>
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1877<div style="display: none;">date QS:P571,+1877-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external text" href="http://collections.rmg.co.uk/collections/objects/15184">Royal Museums Greenwich</a>