The largest container port in Honduras [1] in terms of total tonnage transferred (Puerto Cortés [2] handles more ships), Puerto Castilla is 28 kilometers from Trujillo [3], just inside Punta Caxinas. Most of the freight shipped out of Puerto Castilla is agricultural products and raw materials, much of it produced by Standard Fruit.
There is little reason for tourists to visit Puerto Castilla, except perhaps for its fishing, reputed to be excellent. Waters drop straight down to 20 meters, allowing deep-water fish to be caught right off the docks.
Frequent buses run between Trujillo and Puerto Castilla.
Links:
[1] http://www.moon.com/destinations/honduras
[2] http://www.moon.com/destinations/honduras/the-north-coast/puerto-cortes
[3] http://www.moon.com/destinations/honduras/the-north-coast/trujillo