I was interested in possible modification to a production boat that
would improve or give such a sailboat "blue water" attributes.

Here's a link:

http://www.setsail.com/s_logs/martin/martin133.html

Modifying Production Boats
By Dave and Jaja

"A SetSail visitor recently asked: What modifications did Dave make to
his Cal-25 DIRECTION to prepare it for a circumnavigation? What
thought processes were involved in his decisions? In a general sense,
what should a prudent mariner look for when modifying a stock
production boat for offshore sailing?"

Any other suggestions, comments or links?