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ships in the Age of Sail (Exy and Irving Johnson, and Mary Ann and Joshua Patten were noted). I would like ro submit Eleanor C reesy, captain's wife and navigaror of the clipper ship Flying Cloud, for the 1853 voyage from New York ro San Francisco, a speed record that srood for nearly 150 years.

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lift weight limit very close to what we figured the weight of the ship would be at time of launch. To verify our calcu lations and ensure the safet y of the ship and equipment at time of launch, we had the ship

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San Salvador Miscommunications In the last issue of Sea History (#153, p. 52), reference was made to the July launch of the sailing vessel San Salvador. The statement reads "San Salvador was launched in July after a several-month delay adjusting the logistics of getting her into the water once it was discovered she was significantly heavier than first ca lculated." This contains a fa lse statement that must be corrected. As this ship is to be issued a USCG Certificate oflnspection (COI), the weight and consequent intact, damaged, and sailing stability characteristics of the vessel were of critical importance from the very beginning of the design and construction . The shape of the hull and displacement characteristics, driven by the weight of the structure and appointments, are critical factors ro get right from the beginning and follow throughout the build. The weight of the ship, as well as positions of the centers of gravity, were meticulously calculated and rigidly followed throughout the design and construction of the vessel. At each stage of construction advancement, the vessel was analyzed for weight and adjustments made as necessary so that associated weight-related engineering calculations could be performed with acc uracy. This was essential when it came rime ro move the ship from her build location in a parking lot to a place where she could be easily and safely lifted and gently placed in the water. We knew precisely what her weight was at the time for moving/launching and the likely final weight when completed-placing her exactly on the designed B.otation lines. One of the scenarios for launching the ship involved moving her overland along the San Diego waterfront and launching her by barge crane from a pier adjacent ro the Maritime Museum of San Diego. A local tug service company generously offered the use of its barge crane for this delicate operation. However, this equipment had a

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San Salvador launch physically weighed by a local house-moving company, utilizing specialized hydraulic pressure sensing equipment. Unfortunately, from the field the measured weight was misstated significantly ro the low side. Subsequent check of the stated weight versus our calculations exposed the error and the weight was corrected. The accurate weight of the vessel, together with our calculated weight for launch co ndition with all necessary crane rigging and support, indicated that we wo uld be too close ro the crane's lift limits for reasonable comfort, and thus we determi ned ro find a different solution for lau nching the ship. Unfortunately, the combination of a misstated low weight and exceeding the safe weight limit on the barge crane with the actual weight somehow led to the false narrative that the ship was "too heavy," "heavier than expected," or as in the Sea History notice "significantly heavier than first calculared "-none of which is true. The act ual solution ro moving the ship from her build site and to a launch area involved careful engineering and cooperation among many of San Diego's finest maritime companies and was handled with the highest professionalism and minimal muss and fuss. When launched, the ship B.oared at the d raft marks as expected for the level of co mpletion at the rime. Bur we guess that this story is too bland for the average interested party and it is more fun to tell tales w ith more intrigue and less acc uracy. Thank you for allowing this expression of rhe true record. DOUGLAS SHARP, NA Sharp Design Group of Companies San Diego, California

SEA HISTORY 154, SPRING 2016

Sea History 154 - Spring 2016  

10 The 2016 National Maritime Awards Dinner • 12 ICMM in Hong Kong, the 2015 International Congress of Maritime Museums, by Burchenal Green...

Sea History 154 - Spring 2016  

10 The 2016 National Maritime Awards Dinner • 12 ICMM in Hong Kong, the 2015 International Congress of Maritime Museums, by Burchenal Green...

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