Nathanael Greene Herreshoff, aka “Capt. Nat,” the “Wizard of Bristol, and “NGH” was the most innovative yacht designer of all time. His revolutionary designs, sail craft, rowing boats, steam yachts, and naval torpedo boats, were notably graceful, elegantly engineered, and Fast. So dominant were NGH's designs that his fame spread world wide. During the "Herreshoff Era," Capt. Nat designed a record six winning America's Cup yachts. His company, Herreshoff Manufacturing Company, built every winning America's Cup yacht from 1893 to 1934.
Less well known is Herreshoff's romance with catamarans. As Capt. Nat wrote in 1875, "For actual sailing I enjoyed these craft more than any other I have owned." NGH's first catamaran, the 25' AMARYLLIS (1875) was based on iceboats that NGH sailed around a frozen Bristol Harbor in the winters of 1874-75 and '75-76. When completed, AMARYLLIS, planked with half inch cedar, competed in the Centennial Regatta on June 22, 1876, off the New York Yacht Club's Staten Island station. In that race, AMARYLLIS raced against 34 entries including the best of the local large schooners, "sandbaggers" and "skimming dishes". The attendant press, tongue-in-cheek, described AMARYLLIS as a "life raft," a "cigar boat," "nondescript," the "experiment," and ultimately as the "sea monster."
Initially, in the light winds, AMARYLLIS did poorly. Then a nice southwest sea breeze built and AMARYLLIS sailed merrily through the fleet to win, surviving a near "pitchpole" in the process. AMARYLLIS, cheered by hundreds of onlookers, won by more than twenty minutes over the famous sandbagger PLUCK & LUCK. Some in AMARYLLIS's Class 3 were 40 or more minutes behind.
AMARYLLIS's win in the Centennial Regatta's competition was so eye opening to New York Yacht Club members that AMARYLLIS was protested and later "excused" from her inaugural race. 1st Place prize was awarded to PLUCK & LUCK. Herreshoff and AMARYLLIS were given a separate "consolation" trophy, and told catamarans were not welcome to race again against the local fleet.
http://www.runningtideyachts.com/multihull/Amaryllis.html
Though ocean going double-hulled canoes had been around for centuries in Oceania, AMARYLLIS was an engineering wonder and her design led to a patent awarded to NGH in April, 1877. Herreshoff's catamaran patent focused on double hulls being independent of mast and rigging by using a trussed backbone that was attached to the hulls with a flexible and elastic system of ball joints and rubber washers. The forestay, shrouds, and mainsheet tensions were transferred not into the hulls, but into this backbone. The cat's hulls flexed independently of the rig, and of each other.
http://www.google.com/patents/US189459
After NGH sold AMARYLLIS to Fred Hughes, (the same gentleman who twice raced catamaran against horse), NGH continued to experiment, design, and build catamarans. As well as capitalizing on his patent, NGH's goal was to offer three sizes of catamarans to the public. The cat lengths were to be 20' for three to four crew, 25' for four to five persons, and 32' for six to seven. "These to be furnished complete with anchors and cables, storm jibs, built of the best material, and guaranteed." Though records are incomplete, it is believed NGH designed and built at least 7 of these "guaranteed" catamarans before "business reasons" and lack of orders turned his attention elsewhere.
The Herreshoff cats, after AMARYLLIS, were the JOHN GILPIN, TEASER, TARANTELLA, ARION , GOODY TWO SHOES, DUPLEX, LODALA, AMARYLLIS II, and SEA SPIDER.
All these cats were built in Bristol, R.I. Herreshoff Manufacturing Company, the shipbuilding company formed by NGH and his brother John B. Herreshoff, was just opening its doors in Bristol in 1877. The above listed cats, except the 25' AMARYLLIS (1875), AMARYLLIS II (1933), and the 25' SEA SPIDER (1944-45), were built within a period of three years (1877-1880) and all were pretty much the same length (32'). Except for SEA SPIDER, which had a rigid structure and was designed by Nat's son, Sidney Herreshoff, it is likely all the early Herreshoff cats were of similar design, of the same construction, and built as sisterships in rapid fashion, using interchangeable rigging and spars, gear, and wrought iron structures. We do know each cat “package,” as it came out of the Herreshoff yard, had small improvements, especially in the rig and sails.
Below is a pic of SEA SPIDER, built in 1944-45, one of the last boats to come out of Herreshoff Manufacturing Company before it closed its doors. It was hoped that SEA SPIDER would lead to a class of similar boats, but nothing came of it. As mentioned above, SEA SPIDER had rigid hull connections. A cool detail about SEA SPIDER was its cockpit, which was a dinghy that could be lowered into the water and rowed away. Not sure why we didn't think of something like that when we built WILDFLOWER.