EHL

[Capt’nKarl]

Ok. I’m reading the Waterway Guide 2020. Specifically I’m looking at the ICW or the GIWW which now seems to be the name of the “Ditch” in the Florida Panhandle. I keep seeing ( and I’m assuming this) distance references i.e. GIWW Mile 375 EHL-Mile 170 EHL. What does EHL mean?
Thank you,
Frustrated in Florida

 

[JamesTXSD]

EHL is East of Harvey Lock, WHL is West of Harvey Lock, denoting mileage from a lock in the New Orleans area.

 

[JamesTXSD]

Also noteworthy: mileage used in the ICW and GIWW is in statue miles, not nautical miles (as most often used on marine routes/distances).

 

[CaspersCruiser]

Also noteworthy: mileage used in the ICW and GIWW is in statue miles, not nautical miles (as most often used on marine routes/distances).

Statute miles are also used on charts for the “Western Rivers”— Ohio, Mississippi, Tennessee, Cumberland Rivers among others. My chartplotter is set to display MPH instead of knots. Makes the math easier.

 

[JamesTXSD]

Also noteworthy: mileage used in the ICW and GIWW is in statue miles, not nautical miles (as most often used on marine routes/distances).

Statute miles are also used on charts for the “Western Rivers”— Ohio, Mississippi, Tennessee, Cumberland Rivers among others. My chartplotter is set to display MPH instead of knots. Makes the math easier.

Yes, statute miles is the standard on most inland routes. Different perspectives from based inland vs based on the coast. I originally learned navigation in pilot training, so my transition to marine navigation was easier for me, math-wise, to work with knots. Any of the commercial boats I've driven, even those in inland lakes, used knots. Charting test for USCG captain's license is in knots. It is still my standard, thus the reason I mentioned statute miles. Certainly no offense meant to the inland folks.

 

[Capt’nKarl]

Thank you for the responses and additional information.
Cheers,
Capt’nkarl