The length of the lee-boards is taken at twice the depth of the hold.
As many rivers and lakes are lacking in depth, the length of the lee-boards is reduced for inland vessels, in order to prevent them from touching bottom, consequently their width was increased.
The lee-boards for the ocean and for the rivers of Zealand are long and narrow.
New modifications were made in the rigging of vessels toward the middle of the XVIIIth century. The small bowsprit disappeared in order to make place for the fore-masts which have remained in use since that time.
[III 145]
etc.
The rigging of the large vessels is sufficiently well known. It is desired merely to dwell on the fact that fore-masts have been placed wrongly on various models of the XVIIth century.
A vessel of which the planking is rabbetted into the stem is called a “vaartuig”. The “Aak” (ake) is a boat without a stem and its planking forms a plane up to the bow. The planking ends then at the plane in front. If this occurs for a “Tjalk”, there is obtained what is known as an “Aak Tjalk”.
When the after deck is raised so as to come up to the level of the main rail, the vessel is said to be supplied with a “paviljoen”. Thus, for example, a “Statiepaviljoenpoon”, is a “poon” with a raised deck. If the after deck be not raised, the vessel is simply a “Statiepoon”.
Vessels can be grouped, then, in the following way: