sheer 1 
(shîr)
intr. & tr.v. sheered,
sheer·ing,
sheers To swerve or cause to swerve from a course.
n.1. A swerving or deviating course.
2. a. The upward curve or amount of upward curve of the longitudinal lines of a ship's hull as viewed from the side.
b. The position in which a ship at anchor is maintained in order to keep it clear of the anchor.
[Probably partly from Low German scheren, to move to and fro (said of boats), and partly from Dutch scheren, to withdraw; see sker-1 in the Appendix of Indo-European roots.]