the writer chose the measure as his nom de plume http://boatsafe.com/nauticalknowhow/marktwain.htm http://boatsafe.com/nauticalknowhow/marktwain.htm http://boatsafe.com/nauticalknowhow/marktwain.htm http://www.boatsafe.com/nauticalknowhow/marktwain.htm http://boatsafe.com/nauticalknowhow/marktwain.htm the writer chose the measure as his nom de plume safe water http://boatsafe.com/nauticalknowhow/marktwain.htm safe water nautical term