HB-68 "TRIM AND BALLAST"
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.
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.
Original maritime artwork -createdin‑house
Breathable canvas, everyday comfort
Durable print process for rich,lasting color
Fast dispatch from US locations
30‑day returns & easy exchanges
HB-68 "TRIM AND BALLAST"
Sale price$61.00
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HB-68 "TRIM AND BALLAST"
Sale price$61.00
- Materials: Canvas upper • Cushioned insole • Rubber outsole
- Care: Spot clean or gentle cycle cold; air dry
- Most orders ship in 1–3 business day from our US locations
- Free shipping over $75 (US)
- Try at home for 30 days—easy returns & exchanges
- Warranty summary if applicable