The Collaborative International Dictionary of English v.0.48:

Landward \Land"ward\, adv. & a.
   Toward the land.
   [1913 Webster]

WordNet (r) 3.0 (2006):

landward
    adv 1: toward land; "landward, miles of rough grass marshes melt
           into low uplands" [syn: landward, landwards]