Hamble One Design spotted for sale over in Emsworth and looking very nice. the classs was I believe built by Luke & Sons in their yard just upriver from the Royal Southern YC.
For sale and for a 105 year old boat not looking bad. Apparently the lines and construction drawings of Jess an HOD including description appeared in Yachting Monthly, June 1913 page 165 if you can find a copy.
A little hard to read, she's called Dulcie. With those lines and deep keel I imagine she's a delight to sail in the often choppy Solent waters.