I've decided, through massive popularity, that the skill be called "Sailing" - I will keep the poll open to hear your thoughts. Now, to begin your journey on the sea it is necessary to visit any port in Runescape. Now, you can buy the "Frame", which is the frame of your ship for a certain amount dependent on the material. The frame and ship itself will be constructed from wood. Any type of wood is available, except for Magic. When you buy the frame from the bar or whoever is responsible, you have to get materials. It is similar to construction.
The size of planks is determined by the type of wood used in building your vessel. The frame is available in three sizes. Small, Medium, or Large. Small frames are 10k, medium frames 50k Large frames are 100k. You can now begin to nail the planks to the frame until you've completed the frame. You will need around 100 planks to complete the exterior of your boat. You will be able add more boat to your collection as you advance at a higher level. You can expand the size of your boat or purchase several boats. Think about it. An entire armada of boats that you control (If you are wealthy at the very least).