The “Bovenlanders” took on also rather fuller forms, as can be seen by comparing the drawing of a “Dorstensche aak” with that of a “Samoreus”. A few small Dutch akes carry a discontinuous false stem, whence their name of “Hollandsche Schechtaak”. A few of the “Aakjes” (small akes) are met with also along the Merwede and the Yssel. THE “TURFIJKER” AND THE “HAGENAAR”. [Sidenote: III 101] In the region to the East of the line from Leiden to Delft, North of Rotterdam, South of the Old Rhine and West of Utrecht, there used to exist a very curious type of clinker-built boat of small dimensions, constructed in the German way, called the _Turfijker_, which has disappeared but of which the characteristics are found in the “Hagenaar”. [Sidenote: III 99] The “Hagenaar” is a flat boat without sheer, which rises very little above water on account of the small clear height of the bridges at The Hague, whence its name of “Hagenaar” (Boat of the Hague). Here then is found in the very heart of the province of Holland, a type of “Bovenlander”. It is curious to note that the same large Dutch “aaken” (Dorsten type) are still to be met with in the North-West of North Brabant (Langstraat) where they are still built while this kind of construction has been abandoned on the Meuse and the Lower Waal. The second group of boats under consideration and which circulate above Bonn is easily distinguished from the first by the long rudder, attached to the main-piece which traverses the stern. From the end of the rudder, called “klaphekken”, starts above the main piece, a strong piece of timber solidly fastened to the tiller. This rudder is called the _Klaphekken_. All the boats belonging to this group carry this characteristic rudder; they are, moreover, flatter than those of the first group. They are clinker built although many are now met with which are carvel built. THE “KEEN”. [Sidenote: III 105] [Sidenote: III 106] The _Keen_ may be considered as the fundamental type of this second group. It was rigged formerly like the “Dorstensche Aak” but it now carries, like all the boats, a fore and aft sail. The bottom rises both forward and aft to the level of the nose. Hence the “Keen” is an “ake”. The planking is assembled on the bottom very nearly along a right line. The stern carries, as a rule, a poop deck. THE “KEENAAK”. [Sidenote: III 107] The _Keenaak_ is broader as compared with its length and it is generally a little larger, it stands higher out of water, its ends are fuller and the side planking ends in a point at the nose. THE “LAHNAAK” AND THE “SLOF”. [Sidenote: III 108] The “Keen” when entirely open is called a _Lahnaak_ (ake of the Lahn); its size has been increased of late years. When vessels of this kind have nearly vertical sides, blunt bow and stern, and smooth planking they are known as a _Slof_. [Sidenote: III 109]