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14 Cards in this Set
- Front
- Back
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Secretary of the army priorities of craft on inland rivers
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u.s. military, us mail, commercial passenger craft, commercial tow, commercial fisherman, rec. craft
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bank cushion
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effect when narrow river pushes bow of the boat away from bank
effect increases with speed |
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bank suction
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effect when stern of boat pulled towards bank
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combined effect of cushion and suction
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may cause boat to make sudden sheer towards opposite bank
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meeting in narrow channel
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reduce headway maintain steerage
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where is deepest water in bend of river
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outside of bend
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two types of dam construction
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tainted gate and roller gate
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dams lights at night are
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green, red, or white and in groups of one, two or three
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two vessels passing port to port confined waterway. what to expect as your bow approaches stern of other vessel?
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your bow will sheer towards the other vessel. cushion effect.
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condition where two currents meet downstream end of a middle bar will form
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V-shaped ripple with point to downstream
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River currents tend to
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cause greatest depth of water to be outside of bend
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upstream v-ripple
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towed under buoy
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Secretary of the army priorities of craft on inland rivers
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u.s. military, us mail, commercial passenger craft, commercial tow, commercial fisherman, rec. craft
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flood warnings
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strong currents
channels can shift hidden obstructions drift aids to navigation broken bridge clearances low |
