1. BA TIDE DIAMOND

3. 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 TIDE CURRENT

4. BA TIDE DIAMOND

5. 1400 DR 7 th Feb. HW LW 1010 1410 DR SET: 265 0 Drift : 2,6 Knot For Spring Tide 1,3 Knot Neap Tide

6. BA TIDE DIAMOND 1400 DR 7 th Feb. HW LW 1410 DR SET: 265 0 Drift : 2,6 Knot For Spring Tide 1,3 Knot Neap Tide Mean RangeActual Range Mean RangeActual Range We will check Mean Range and Actual Range for Actual Drift Mean Range Actual Range Proceed

7. BA TIDE DIAMOND 1400 DR 7 th Feb. 1410 DR SET: 265 0 Drift : 2,6 Knot For Spring Tide 1,3 Knot Neap Tide ACTUAL RANGE = 5,5 mMEAN RANGES Springs= 6 m Neaps= 3,2 m We will compare ranges and make a interpolation

8. BA TIDE DIAMOND 1400 DR 7 th Feb. 1410 DR SET: 265 0 Drift : 2,6 Knot For Spring Tide 1,3 Knot Neap Tide Springs= 6 m 2,6 Knot Neaps= 3,2 m 1,3 Knot 1,3 Knot2,8 m Z 0,5 mY ACTUAL RANGE = 5,5 m Y = ( 0,5 x 1,3 ) / 2,8 Y = 0,23 Z = 2,6 – 0,23 Z = 2,37 = 2,4 Knot MEAN RANGES Springs= 6 m Neaps= 3,2 m ACTUAL RANGE = 5,5 m

9. BA TIDE DIAMOND 1400 DR 7 th Feb. 1410 DR SET: 265 0 Drift : 2,4

10. Questions

12. HW LW ACTUAL RANGE = HW – LW 6,5 – 1 5,5 m