Abstract
The purpose of this paper was to determine the usability of unmanned hydrographic drones and photogrammetric techniques during the conduct of work, the results of which are potentially to serve as navigational materials in areas that, due to their characteristics, make it impossible to carry out research using crew vessels and direct shoreline determination. In order to prepare and carry out the measurement campaign with the greatest possible accuracy and safety, the authors of the article decided to determine the shoreline of the analyzed reservoir using photogrammetric methods. The use of satellite images allowed the border between land and water to be identified as precisely as possible, which had a direct impact on the accuracy of relating depth data to their location on Earth's globe. Use of unmanned vessels and orthophotos can find practical application when navigating vessels during maneuvers required high precision.
Highlights
In the context of safe navigation of an inland vessel or water sports, it is crucial to know the bottom relief of a given body of water [1,2]
The aim of this study is to carry out bathymetric measurements using a manned hydrographic survey unit in order to visualize the shape of the seabed in the area of the yacht marina
Hydrographic surveys were conducted on August 29, 2019 during the afternoon at the yacht harbor of the National Sailing Center of the Academy of Physical Education in Gdansk
Summary
In the context of safe navigation of an inland vessel or water sports, it is crucial to know the bottom relief of a given body of water [1,2]. Information on the structure of a water body is obtained by taking hydrographic surveys [5,6]. Data recorded during the depth soundings have a direct impact on the safety of navigating vessels in approach lanes and ports [7]. Their results are used to construct maps of water bodies and other navigational aids used by captains. Due to the high variability of small water bodies, including the port basins, a high frequency of depth measurements and updated hydrographic studies is required [8,9]
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