Skipjack tuna commercial tunas, and its population is considered sustainable against its current consumption. Its fishing is still controversial due to the methodology, with rod and reel or fishery options being promoted as ecologically preferable. Purse seine methods are considered unsustainable by some authorities due to excess bycatch, although bycatch is said to be much reduced if fish aggregation devices are not used. These considerations have led to the availability of canned skipjack marked with the fishing method used to catch it. Skipjack is considered to have "moderate" mercury contamination. As a result, pregnant women are advised against eating large quantities. In
Skipjack-class submarine torpedo room and AMS for ballast tanks. The design was improved on the "Thresher"s, the one-off , and subsequent attack submarines by relocating the torpedo room into the operations compartment via angled midships torpedo tubes to make room for a large sonar sphere in the bow. The "George Washington" class, the first SSBNs, were derived from the "Skipjack"s, with rebuilt from the incomplete first . The hull of "Scorpion" was laid down twice, as the original hull was redesigned to become the "George Washington". Also, the material for building was diverted into building , which delayed "Scamp"s progress. The bow