Alkaid (Benetnasch). Star Ursae Majoris. S.H.A. 154°; Dec. N 50°. Arabic for 'The Chief.
All Aback. With the wind on fore side of the sails. Used colloquially to mean 'astounded' or 'flabbergasted'.
All Aboard. Order to embark.
All Hands. All the crew.
All in the Wind. With all sails shaking through wind being on their luffs. Normally occurs when ship passes through wind from one tack to the other, but can also be caused by bad steering when close hauled.
Allonge.Sheets attached to a Bill of Exchange for further endorsements when there is no more room on the Bill itself.
All other Perils. Phrase used in marine insurance policy to mean 'perils similar to those specifically mentioned'.