4. Explain and identify using diagrams the following maneuvers, points of sail, and other terms: 1  No-Sail Zone. 2  Closed Hauled. 3  Sailing-by-the-Lee. 4  In Irons. 5  Close Reach. 6  Stand-on. 7  Luffing. 8  Beam Reach. 9  Give-way. 10  Head-to-Wind. 11  Broad Reach. 12  Tacking. 13  Port Tack. 14  Run. 15  Jibing. 16  Starboard Tack.
Most blisters happen from irritation or other damage to the skin from something outside the body, such as a shoe. Some illnesses can make blisters. A single blister is usually from friction or a burn, typically on the hands or feet.
Autoimmune Diseases That Cause Blisters. Blisters may develop from diseases that cause your body to attack your own skin (autoimmune diseases), such as: Pemphigus , an uncommon, sometimes fatal disease. Blisters of varying sizes break out on the skin, the lining of the mouth, the vagina or penis, and other mucous membranes. Treatment includes medicine to suppress the immune system and, sometimes, a plasma exchange procedure (plasmapheresis).