Hi All
I can't believe there have been 160+ replies and over 26000 views since I started the thread when looking for the orphanage's location.
I now know I was wrong about it being on the present Iceland shop site

My Mum and Dad found a 1908 West Hull map for me and when I was up there recently I checked it out.
I was also looking for the church where my grandparents were married. It was St Judes and I remember going past it quite often but always thought they were the other way round.
I can confirm that St Judes Church was where the Iceland shop is now, ie, between Norwood St and Stanley St. The Seamen's Orphanage was next on the left going away from town towards Botanic Crossing. It was between Stanley St and Derringham St. There is now a Tesco Express on the corner of Stanley St and the rest is derelict scrubland. It is surrounded by builder's metal fencing but if you look closely you can still see where the entrance was as the gate brick pillars are still there.
I hope this is useful to someone, and a big thank you for all the interesting info that has come out the thread

Regards
Ian