I was wondering about 'Mana' of which there seem to have been quite a few.
http://www.nzmaritimeindex.org.nz/izsearchvessels.php?hit=1&name=MANA
A likely contender would be the tug of that name built 1890 and this vessel appears in Scottish Ship building database:
https://www.clydeships.co.uk/view.php?year_built=&builder=&ref=7669&vessel=MANA
However illustration of Mana shows funnel/boilers aft of paddle boxes whereas in above photo funnel/boilers looks to be forward of paddles.
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