Under agreement with the U.S. Saint Lawrence Seaway Development Corporation, The St. Lawrence Seaway Management Corporation is proposing to amend the joint Practices and Procedures (known as "regulations" within the SLSDC). Gyro compass error greater than 2 degrees must be serviced prior to transiting the Seaway, if noted during a Seaway transit, it must be reported to the nearest Seaway station and the gyro compass must be serviced at first opportunity. When magnetic compass error is greater than 5 degrees…