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INTERCEPTOR DESIGN AND CONTROL FOR THE HIGH SPEED CRAFT 17
3.1 History of Vessel Stabilizing Devices and Trim Tabs
First ship motion stabilizing devices were invented in late 1800s and early 1900s. Below
inventions, shown in chronological order, project the development leading to trim tabs and
eventually interceptors.
Figure 3.1 Apparatus for regulating the rolling and
pitching of vessels [5]
Figure 3.2 Adjustable fin for vessels [6]
First few vessel stabilizing extensions/devices were as shown in Figure 3.1 Apparatus for
regulating the rolling and pitching of vessels [5] and Figure 3.2 Adjustable fin for vessels [6]. Then in
the mid-1900s initial “trim tabs” were invented (Figure 3.3 Extension attachment for boats [7]).
Although the first few inventions aimed the same objectives with their predecessors, such as
stabilizing the vessel or decreasing the vibrational effects, they are practically similar to
conventional trim tabs.
After moving the stabilizing extensions from side shell to the transom, different variations were
invented (these inventions vary as different actuating methods or different plate types but
fundamentally serve similar purposes). For example, same stabilizing purposes with pivotable
hydrofoils were invented as seen in Figure 3.4 Boat having pivotable underwater hydrofoils [8].
Sayı 7, 2016 GiDB|DERGi
