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.
Many insects cause blisters, but many blisters are so tiny that you experience them as just little bumps. However, some insects and spiders produce distinct and often very large blisters.In the United States, the bites of the brown recluse spider, the yellow sac spider and fire ants cause characteristic blisters. Handling of blister beetles also causes eruption of blisters on the skin.The blister-causing bites of these insects and arachnids are not life-threatening except in cases of hypersensitive individuals, who may have a severe allergic reaction to the venom or toxin.any insects cause blisters, but many blisters are so tiny that you experience them as just little bumps. However, some insects and spiders produce distinct and often very large blisters.