Skipjack tuna important prey species for sharks and large pelagic fishes and is often used as live bait when fishing for Marlin. It has no scales, except on the lateral line and the corselet (a band of large, thick scales forming a circle around the body behind the head). It commonly reaches fork lengths up to and a weight of . Its maximum fork length is and maximum weight is . Ageing skipjack tuna is difficult, and the estimates of its potential lifespan range between 8 and 12 years. Skipjack tuna is a batch spawner. Spawning occurs year-round in equatorial waters, but
Hilda M. Willing (skipjack) a second, smaller hatch, a small doghouse is set on the deck to provide low headroom in what would otherwise be a very low cabin, high. A box at the stern contains the hydraulic steering gear installed by Sweitzer to replace the original patent gear. Davits for the pushboat hang over the transom. The "Willing" is rigged with a jib-headed mainsail, or leg-of-mutton, with a single large jib. She carries dredges on each side with a shared motor. Hilda M. Willing (skipjack) Hilda M. Willing is a relatively small Chesapeake Bay skipjack, built in 1905 at Oriole, Maryland, and declared