Inland Navigator (IN) Requirements:

Courses
NASBLA approved safe boating course
Seamanship (or S 101 and S 102)
Engine Maintenance (EM)
Marine Electronics or Marine Electrical Systems or ME 101

Seminars 

CHT - How to Use a Chart (or Piloting, or Chart Smart or Boating)
WF - Onboard Weather Forecasting or Weather course or Weather Modules
GPS - Using GPS or the new P or AP course
VHF Radio and VHF/DSC Marine Radio (or ME 102 or Marine Communications Systems)
2 additional seminars or 1 additional course

Skills
BPH - Basic Powerboat Handling skill demonstration or US Sailing Safe Powerboat Handling on-the-water program
FE - Use of Fire Extinguishers

Optional Endorsements

IW - Inland Waterways (Navigating Rivers, Dams and Locks seminar)
PAD - Paddle craft (canoes and kayaks) - Paddle Smart seminar
SA - Sail boating (or Sail or Sail Modules)

Jacksonville Sail and Power Squadron