The Williamson Turn is a maneuver used to bring a ship or boat back to a point it previously passed through, often for the purpose of recovering a man overboard.
The Williamson Turn is most appropriate if the point can be allowed to go (or already has gone) out of sight, but is still relatively near. For other situations, an Anderson turn or a Scharnow turn might be more appropriate.
Put the rudder over full.
If in response to a man overboard, put the rudder toward the person (e.g., if the person fell over the starboard side, put the rudder over full to starboard).
After deviating from the original course by about 60 degrees, shift the rudder full to the opposite side.
When heading about 20 degrees short of the reciprocal, put the rudder amidships so that vessel will turn onto the reciprocal course.
Bring the vessel upwind of the person, stop the vessel in the water with the person along-side, well forward of the propellers
If dealing with a man overboard, always bring the vessel upwind of the person. Stop the vessel in the water with the person well forward of the propellers.
Williamson and O'Rourke view this primary dependent variable in the light of its inherent interest as a measure of the economic well being of large numbers of people as well as its provision of an angle on the distributive question, which emerges as one of the central themes of the book.
In the O'Rourke and Williamson scheme the out-migration is then impelled by "demographic forces" that are not clearly explained but which result from past natural increase augmented by an "emigrant stock" effect (relatives and friends, or chain migration).
O'Rourke and Williamson construct an index of restrictiveness in immigration policy and, in a regression analysis, show that it moves most significantly in relation to the impact of immigration on the labor market.
The WilliamsonTurn is a maneuver used to bring a ship or boat under power back to a point it previously passed through, often for the purpose of recovering a man overboard.
However, according to Uncommon Carriers by John McPhee, the maneuver was originally called the "Butakov pipe" and was used in the Russo-Japanese War as a way of keeping guns at the same distance from an enemy.
The WilliamsonTurn is most appropriate at night or in reduced visibility, or if the point can be allowed to go (or already has gone) out of sight, but is still relatively near.
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