Great Lakes–St. Lawrence Seaway system

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:river
gptkbp:alsoKnownAs	gptkb:St._Lawrence_Seaway gptkb:Seaway
gptkbp:connects	gptkb:Atlantic_Ocean gptkb:St._Lawrence_River gptkb:Great_Lakes
gptkbp:country	gptkb:Canada gptkb:United_States
gptkbp:governingBody	gptkb:St._Lawrence_Seaway_Management_Corporation gptkb:Saint_Lawrence_Seaway_Development_Corporation
gptkbp:hasMajorPort	gptkb:Port_of_Toronto gptkb:Port_of_Duluth-Superior gptkb:Port_of_Montreal
https://www.w3.org/2000/01/rdf-schema#label	Great Lakes–St. Lawrence Seaway system
gptkbp:includes	gptkb:St._Lawrence_River gptkb:Welland_Canal gptkb:St._Marys_River various locks
gptkbp:length	3700 km
gptkbp:locatedIn	gptkb:North_America
gptkbp:maximumVesselLength	23.8 m 225.5 m 8.08 m
gptkbp:opened	1959
gptkbp:protectedBy	gptkb:canal
gptkbp:purpose	gptkb:navigation shipping
gptkbp:season	late March to late December
gptkbp:bfsParent	gptkb:U.S._locks_of_the_Saint_Lawrence_Seaway
gptkbp:bfsLayer	6