In Port Wi-Fi
The most cost effective and fastest solution will most likely be if the port where you are offers a high speed land based internet connection and shares this with the vessels in the port. Speeds will however depend on how many users are sharing the connection.
You can either connect your devices (smartphone, laptop or other wireless device) directly to the network or you can have your wireless router pick up the signal and relay it on board. The second solution has the advantage of only having to configure one device when changing ports.
High Speed Expert Solution
If you have a dedicated berth and office or appartment nearby with Line-Of-Sight between both then you can share your Fiber or Cable connection up to 10Gbps wirelessly with millimeter wave solutions which operate at a much higher frequency than regular WiFi, WiMax or 3G. For more information see our 10Gbit Links