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.
Contact dermatitis can also cause blisters. This is a skin reaction to allergens, like poison ivy, latex, adhesives, or irritants like chemicals or pesticides. It can cause red, inflamed skin and blistering. Burns, if severe enough, can produce blistering. This includes burns from heat, chemicals, and sunburns. Allergic eczema is a skin condition that is caused or worsened by allergens and can produce blisters.