Question 1953Navigation General

The correct answer is D) become weak and variable. When the declination of the Moon is 0°12.5'S, the Moon is positioned directly over the equator, which results in a reduced tidal range and weaker tidal currents in Gulf Coast ports. This is because the Moon's gravitational pull is exerted equally on both sides of the equator, leading to a cancellation of the tidal forces and resulting in weak and variable tidal currents. The other options are incorrect because: A) the tidal currents would not exceed the predicted velocities, B) there would not be a double ebb or double flood, and C) the currents would not become reversing currents, as they would remain weak and variable due to the Moon's position over the equator.