on the lee beam

from The Collaborative International Dictionary of English v.0.48
Lee \Lee\, a. (Naut.)
   Of or pertaining to the part or side opposite to that against
   which the wind blows; -- opposed to {weather}; as, the lee
   side or lee rail of a vessel.
   [1913 Webster]

   {Lee gauge}. See {Gauge}, n. (Naut.)

   {Lee shore}, the shore on the lee side of a vessel.

   {Lee tide}, a tide running in the same direction that the
      wind blows.

   {On the lee beam}, directly to the leeward; in a line at
      right angles to the length of the vessel and to the
      leeward.
      [1913 Webster] Leeangle
    

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