Complex sentence: The U.S. Marine Corps has replaced the IBA with the Modular Tactical Vest (MTV) and Scalable Plate Carrier (SPC), although the IBA is still used by the U.S. Navy for sailors aboard its warships as of 2017.
Split into simpler sentences: The U.S. Marine Corps has replaced the IBA with the Modular Tactical Vest (MTV) and Scalable Plate Carrier (SPC). The IBA is still used by the U.S. Navy for sailors aboard its warships, as of 2017.