In submitted work variants of use of computer networks, used in modern navigating means, are considered. A major factor describing quality of work of means of navigation is peed. The modern means of navigation are built on the basis of computer networks. This most is explained actuality of a problem of an estimation of productivity of computer networks of navigation. The basic kind of navigating supervision is automatic dependent supervision. Such method of supervision is widely used in Japan, USA, in the countries of Western Europe (Sweden, Denmark, northern part of Germany). In near future wide introduction of the given method of navigating supervision in Latvian is expected. In resulted materials have any of methods, allowing to make designing and optimum use of computer networks of navigating supervision in Latvia is considered.