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.
But there are also types of blisters that may have been caused by a medical condition, including fever and cluster blisters, impetigo blisters, atopic eczema blisters, or blisters from chickenpox, shingles and dermatitis herpetiformis.Here, we will focus on the most common types of skin blisters: burn blister occurs when the first two layers of skin are damaged by a second-degree burn. A burn blister is much like a water blister (except that it will be obvious it was caused by a burn as it is extremely painful). Like water blisters, burn blisters are also filled with an important watery fluid called serum.