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Probably. Many [smaller boats have towers](http://www.saltwatersportsman.com/files/imagecache/enlarged_image/_images/201306/tower-01.jpg) too. The fish boats like this Hatteras are after are tuna/marlin which are many miles offshore (in NE USA at least), so they’re larger bodies and more spread out. Also they’re [Pelagic](http://en.wikipedia.org/wiki/Pelagic_zone) so when they feed it’s near the surface and you usually can spot birds/dolphins nearby.