1.When navigating in the above waters, mariners ought to follow the Rules of Navigation in the Inland Waterways of the Russian Federation, approved by the Ministry of Transport of the Russian Federation on 19 January 2018. In case of single calls of seagoing vessels at these waters in the situations mentioned in the situations mentioned in the International Regulations for Preventing Collisions at See, 1972, Rules 23(a) and 30(a),(b),(c), it is permitted to carry lights and shapes prescribed by these rules as an exception. 
2. A State Nature Reserve is situated between two branches Nadymskaya Ob' and Khamanel'skaya Ob', where all activities causing harm to animals and their habitat as well as an injury of rare and extinct species of plants, are prohibited. Visits to the State Nature Reserve are restricted and regulated by Regulation of Nizhne-Obskiy State Nature Reserve. Provision of reserve activities and security is made by the organization Directorate of particular protected natural territories of regional importance in Yamalo-Nenets autonomous region, e-mail: diroh89@mail.ru