U.S. Revenue Cutter Bear in its 1926 to 1941 configuration (SS Bear of Oakland/USS Bear). It was during this period of time that Admiral Richard Byrd used Bear for his Antarctic Expeditions. The modifications are in red. The 3D scale at the bow of the ship represents 15 feet (1-foot increments from 1 to 5 feet and then 2-foot increments from 5 to 15 feet). These modifications were constructed using plans from Mystic Seaport Museum and historic photographs.