The AVMT-300 is a Brazilian cruise missiles that is under development by Avibrás to the ASTROS II system. It projected to be a “economic” version of the American BGM-109 Tomahawk. The missile of the Avibrás

Avibras

Avibras Indústria Aeroespacial is a diversified Brazilian company which designs, develops and manufactures defense products and services. Its range of products encompasses artillery and aircraft defense systems, rockets and missiles...

is equipped with a central computer that combines an inertial center the laser, connected to an active receiver GPS that it uninterruptedly supplies given of positioning the correction of the route. Apparently it will be a naval version called X-300.