Skipjack tuna addition, skipjack's livers were tested globally for tributyltin contamination. TBT is an organotin compound introduced into marine ecosystems through antifouling paint used on ship hulls, and has been determined to be very toxic. About 90% of skipjack tested positive for contamination, especially in Southeast Asia, where regulations of TBT use are less rigorous than in Europe or the US. Skipjack tuna is used extensively in Japanese cuisine, where it is known as . Besides being eaten seared () and raw in sushi and sashimi, it is also smoked and dried to make katsuobushi, the central ingredient in dashi (a common
Ruby G. Ford (skipjack) Ruby G. Ford (skipjack) The "Ruby G. Ford" was a Chesapeake Bay skipjack, built in 1891 at Fairmount, Maryland. She was a two-sail bateau, or "V"-bottomed deadrise type of centerboard sloop. She had a beam of , a depth of , and a net tonnage of 5 register tons. She was one of the 35 surviving traditional Chesapeake Bay skipjacks and a member of the last commercial sailing fleet in the United States. According to a first-hand account by Christopher White in his book "Skipjack", pp. 292–296, St. Martin's Press, published in 2009, the "Ruby G. Ford" was burned to