Experimental studies of a floating anchor

The paper presents the results of experimental studies related to the determination (calculation) of the aggregate resistance of a floating anchor. As you know, a floating anchor is a device that keeps a small vessel in place in strong currents, wind, high waves. In our study, a floating anchor is necessary to assess the available thrust of the vessel in the conditions of the landfill, i.e. its towing and determination of the speed of trawling (towing) by a motor boat model "Oka-4". The experiments were carried out in the water channel of LLC "Fishering Service" in Kaliningrad and at the Berezovsky quarry test site, which is located in the Gvardeisk district of the Kaliningrad region. Fourth-year undergraduate students took part in the experimental research. They used part of the experimental data obtained to write their final qualifying theses. The experimental studies carried out by us made it possible to substantiate the traction characteristics of two paired motor boats "Oka-4" with engines, each with a power of 25 hp. The studies were carried out under both laboratory and other environment conditions being equal. Trawling of such a prey as vendace (Coregonus albula) in Lake Vishtynetskoye is one of the priority tasks for the Kaliningrad region in the field of fishing. This type of fishery is important from the point of view of substantiating the total allowable catch (TAC) for catching vendace, since the designed trawl for catching this fish species will be operated and will significantly increase the catch of a valuable species of hydrobionts in Lake Vishtynetskoye.

1. Rozenshtein M. M., Nedostup A. A. Mekhanika orudiy rybolovstva [Fishing gear mechanics]. Moscow. Morkniga Publ., 2011. 528 p.

2. Radtsig A. N. Eksperimental'naya gidromekhanika [Experimental hydromechanics]. Moscow. MAI Publ., 2004. 296 p.

3. Shibanov G. P. Ekspluatatsiya i bezopasnost' parashyutnykh system [Operation and safety of parachute systems]. Moscow. Mashinostroenie Publ., 2005. 288 р.

4. Nedostup A. A. Eksperimental'naya gidromekhanika orudiy rybolovstva [Experimental hydromechanics of fishing gear]. Moscow. Morkniga Publ., 2014. 363 p.

5. Venttsel' E. S. Teoriya veroyatnostey [Probability theory]. Moscow. Gosudarstvennoe izdatel'stvo fiziko-matematicheskoy literatury, 1962. 564 р.

6. Shchigolev B. M. Matematicheskaya obrabotka nablyudeniy [Mathema-tical processing of observations]. Moscow. Gosudarstvennoe izdatel'stvo fizikomatematicheskoy literatury, 1962. 344 р.