El Salvador claimed that it had obtained scientific, technical, and historical evidence which “demonstrates that the old course of the Goascorán River debouched in the Gulf of Fonseca at the Estero `La Cutú', and that the river abruptly changed course in 1762”.

(2) That a decisive factor that persuaded the Chamber to accept Honduras's claim to a land boundary that follows the current course of the Goascorán, purported to be the course of the river at the time of independence in 1821, was the chart and the descriptive report of the Gulf of Fonseca that Honduras presented and that were supposedly drawn in 1796, as part of the expedition of the brigantine El Activo.” El Salvador claimed that it had obtained scientific, technical, and historical evidence which “demonstrates that the old course of the Goascorán River debouched in the Gulf of Fonseca at the Estero `La Cutú', and that the river abruptly changed course in 1762”.