Several destrucive earthquakes have been recorded in the Eastern Caribbean during the last three centuries. In addition to hazards posed by earthquakes most of the islands are algo at risk from volcanic eruptions. The Seismic Research Unit maintains a network of thirty seismograph stations in the Commonwealth terrotories of the Eastern Caribbean, to monitor and study earthquakes in the region in an effort to specify the level of seismic hazard and algo to maintain a volcano surveillance and warning system. Work is algo geared at specifying the level of volcanic risk in each of these territories. Over fifteen potentially active volcanic centers are distributed along the 750 km long island arc. Generally, the stations are deployed at locations which enable fairly accurate detection and location of most regional earthquake above magnitude two. Procedures are algo in place to alter the deployment to investigate volcano-related seismic crises. The effectivensess of the network depends on operational strategies and procedures and equipament that were developed at the unit.Se describe la operación de las redes sísmicas de 30 estaciones que cubre las islas del Caribe Oriental, con centro en la Universidad de West Indies en Trinidad. La red incluye la vigilancia de 15 volcanes activos en un arco de 750 km de largo. La red tiene capacidad para detectar y localizar la mayoría de eventos de M>2 en la región. Se describe la evolución de la red y algunas de sus estrategias de superación.