a (nautical|aircraft) On the beam; at a right angle to the centerline or keel of a vesselFM 55-501 Marine Crewman’s Handbook or aircraft; being at a bearing approximately 090 degree|Degrees or 270 Degrees relative JP 1-02 Department of Defense Dictionary of Military and Associated Terms. (defdate|Mid 19th century.)(reference-book | last =| first = | authorlink = | coauthors = | editor =Brown, Lesley | others = | title = The Shorter Oxford English Dictionary | origdate = | origyear = 1933| origmonth = | url = | format = | accessdate = | accessyear = | accessmonth = | edition = 5th | date = | year =2003| month = | publisher =Oxford University Press | location =Oxford, UK | language = | id = | doi = | isbn =978-0-19-860575-7 | lccn = | ol = | pages =3| chapter = | chapterurl = | quote =)
a (nautical|aircraft)alongside | Alongside or abreast; opposite the center of the side of the ship or aircraft. (defdate|Mid 19th century.)
a (nautical|aircraft)alongside | Alongside or abreast; opposite the center of the side of the ship or aircraft. (defdate|Mid 19th century.)
p (nautical) Alongside. (defdate|Mid 19th century.)