120 likes | 292 Views
BA TIDE DIAMOND. BA TIDE DIAMOND. TIDE CURRENT. Current = the horizontal movement of a body of water. Causes: Gravitational effects of sun and moon Heating and cooling of Earth’s atmosphere Winds blowing across the ocean’s surface Changes in salinity due to rain and evaporation
E N D
TIDE CURRENT • Current = the horizontal movement of a body of water. • Causes: • Gravitational effects of sun and moon • Heating and cooling of Earth’s atmosphere • Winds blowing across the ocean’s surface • Changes in salinity due to rain and evaporation • The Coriolis effect Set - the direction of the currents motion Drift - the velocity of the current Set & Drift represent the vector added to ship’s motion by the current
1410 DR 1400 DR 7th Feb. 1010 HW LW BA TIDE DIAMOND SET : 2650 Drift : 2,6 Knot For Spring Tide 1,3 Knot Neap Tide
1410 DR 1400 DR 7th Feb. HW LW BA TIDE DIAMOND SET : 2650 Drift : 2,6 Knot For Spring Tide 1,3 Knot Neap Tide We will check Mean Range and Actual Rangefor Actual Drift Proceed
1410 DR 1400 DR 7th Feb. BA TIDE DIAMOND SET : 2650 Drift : 2,6 Knot For Spring Tide 1,3 Knot Neap Tide MEAN RANGES Springs = 6 m Neaps = 3,2 m ACTUAL RANGE = 5,5 m We will compare ranges and make a interpolation
1410 DR 1400 DR 7th Feb. 2,8 m 1,3 Knot 0,5 m Y BA TIDE DIAMOND MEAN RANGES Springs = 6 m Neaps = 3,2 m SET : 2650 Drift : 2,6 Knot For Spring Tide 1,3 Knot Neap Tide ACTUAL RANGE = 5,5 m Springs = 6 m 2,6 Knot Neaps = 3,2 m 1,3 Knot Z ACTUAL RANGE = 5,5 m Z = 2,6 – 0,23 Z = 2,37 = 2,4 Knot Y = ( 0,5 x 1,3 ) / 2,8 Y = 0,23
SET : 2650 Drift : 2,4 1410 DR 1400 DR 7th Feb. BA TIDE DIAMOND
HW LW ACTUAL RANGE = HW – LW 6,5 – 1 5,5 m