http://www.cotecmar.com/Library/News/FilesPatrullero%20de%20Apoyo%20Fluvial%20Paf%20-%20Pesada14.PDF COTECMAR-Heavy riverine patrol vessel overview (Spanish)] Some of the desired capabilities included extended range/endurance, helipad capability for provisioning and SAR/medevac, newer or upgraded offensive and defensive systems and improved support for embarked Marine Infantry units and smaller dependent patrol boats, such as the 22 feet 'Piraña' and 'Anguila' boats.