'MUA', All Acronyms, 13 January 2018, <http://www.allacronyms.com/_Medical/MUA/Medical> [accessed 13 January 2018] Bluebook All Acronyms, MUA (Jan. 13, 2018, 7:01 PM), available at http://www.allacronyms.com/_Medical/MUA/Medical. CSE All Acronyms. MUA [Internet]; January 13, 2018 [cited 2018 JAN 13]. Available from: http://www.allacronyms.com/_Medical/MUA/Medical.
A sea anchor is deployed off the bow and a drogue is deployed off the stern. The sea anchor keeps the bow up to weather, a drogue is usually smaller, and allows you to move downwind while acting as a brake. Each has wide variations in the sizes used, and this affects their specific role in sea survival.
It's often useful to set out anchors off the bow and stern to position boats. To do this drop the bow anchor first, then back off twice the distance of the rode you want to set. Drop the second anchor and work both lines until your boat is in the right place. You may, at times, want a quick release anchor system. second anchor can keep your boat from swinging in current or wind. To set the second anchor steer your boat into wind or current until it is 90 degrees from your first anchor -- the line between both set anchors should be at right angles to the current or wind.