Third System of US coastal fortifications

GPTKB entity

Predicate	Object
gptkbp:instanceOf	coastal defense system
gptkbp:characteristic	casemated forts large masonry structures multi-tiered gun emplacements
gptkbp:conflict	gptkb:American_Civil_War gptkb:War_of_1812
gptkbp:country	gptkb:United_States
gptkbp:endDate	1867
gptkbp:followedBy	gptkb:Endicott_Period_fortifications
gptkbp:fundedBy	gptkb:United_States_Congress
gptkbp:governingBody	gptkb:United_States_Army_Corps_of_Engineers
https://www.w3.org/2000/01/rdf-schema#label	Third System of US coastal fortifications
gptkbp:location	gptkb:Great_Lakes Atlantic coast Pacific coast Gulf coast
gptkbp:material	gptkb:brick gptkb:stone granite
gptkbp:notableExample	gptkb:Fort_Monroe gptkb:Fort_Point gptkb:Fort_Sumter gptkb:Fort_Warren gptkb:Fort_Pickens gptkb:Fort_Jefferson gptkb:Fort_Adams gptkb:Fort_Knox_(Maine) gptkb:Fort_Morgan gptkb:Fort_Delaware gptkb:Fort_Massachusetts gptkb:Fort_Pulaski
gptkbp:notableModel	gptkb:Joseph_G._Totten gptkb:Simon_Bernard
gptkbp:precededBy	gptkb:Second_System_of_US_coastal_fortifications
gptkbp:purpose	defense against naval attack
gptkbp:reasonForDevelopment	inadequacy of earlier systems lessons from War of 1812
gptkbp:startDate	1816
gptkbp:status	obsolete many preserved as historic sites
gptkbp:bfsParent	gptkb:Fort_Point
gptkbp:bfsLayer	5