Marina Wireless Network
This diagram is representational only and depicts a typical Marina WiFi network application. Each wireless installation is unique and results can vary due to many different environmental factors. For outdoor wireless networks Line of Sight (LOS) must be considered. Basically that means you will need a clear unobstructed view of the antenna from the remote point in the link. Trees and leaves are obstructions to 802.11 frequencies so they will partially or entirely block the signal.
Print and post this Marina WiFi Network diagram by downloading a pdf here.

Products referenced in this application
Note: The products referenced below coincide with the typical application diagram. Actual products for your specific application may vary.
WLAN-LCCPE28-1 802.11n Outdoor Access Point
HG2415U-PRO 2.4 GHz 15 dBi Omni Antenna
HG2409UM-RSP 2.4 GHz 8.5 dBi Omni Marine Antenna
WLAN-LCUSB2415 Outdoor High Power USB WiFi Adapter
HG2409U 2.4 GHz 8.5 dBi Omni Antenna
NB181608-10V Vented NEMA Enclosure with 120V AC Power
TOAC5700 Cat 5e Outdoor Rated, UV Resistant, Bulk Cable 1K Foot Reel
TSP4088C5 Cat 5e 8x8 Unshielded RJ45 Plug
HT1500 Heavy Duty Cable Stripper/Crimp Tool