Submarine force · WWII · Hoodie
Trim and Ballast Hoodie
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Two systems, one principle. Fill to descend, blow to ascend, and trim until the boat sits exactly where you wanted her.
Main ballast tanks took the boat down and up. Trim tanks moved water fore and aft to keep her level. A good chief of the watch held the boat steady at periscope depth with a few pounds of correction at a time. A bad one let the bubble run, broached the boat, and broke the attack. The technique was the most delicate piece of seamanship in the submarine. It was also the one most pressing on the success of every approach.
For those who understand that depth control is mostly about not allowing small errors to grow into large ones.
Harborborne. Built to Endure.
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Details
Original artwork, made to honour the people who served and the day this design remembers. The story behind it is in the description above.
The blank, its weight (GSM) and fit are listed in the description, and the size chart linked above is for that exact blank. Between sizes? Size up.
Made for you after you order, then shipped. Shipping is free; the delivery estimate for your address is shown at checkout, and we email you when it’s on its way.
If it arrives misprinted, damaged or faulty, send us a photo and we’ll make it right with a replacement or a refund. See Returns & Warranty. Your rights under consumer law are not affected.
Machine wash cold, inside-out, gentle cycle. Mild detergent, no fabric softener. Tumble dry low or hang-dry. Cool iron inside-out; do not iron the print.
Harborborne is a naval and aviation heritage brand. Every design is our own original artwork, drawn from the official record of the ships and aircraft and the days they remember. Each piece is printed one at a time, in your size, after you order. We are not affiliated with or endorsed by the U.S. Navy, U.S. Air Force or Department of Defense.