The Hughes Northstar 35's were early IOR era racer- cruisers. Hughes did a pretty nice job with build quality (I owned a Hugher Northstar 500 QT back in the 1970's) but they were never intended for the rigours of offshore cruising.
The IOR rating rule produced designs that were miserable boats from a motion comfort and ease of handling standpoint and in many ways the Hughes 35 was a poster child for what was wrong with the IOR rule (think Fastnet Disaster). My recollection is that these boats were fin keel and skeg hung spade rudders similar to the early 1970's Tartan 41 raceboats.
The shortcomings of these boats come from the fact that they were designed to be sailed in a compartatively narrow wind range, with large crews, a lot of crew weight on the rail, and with large sail inventories and frequent sail changes.
These boats would be pretty low on my list of boats to cruise offshore.