[MudMarine]

Skippers,

I am going to practice manual navigation as part of realism. I will be using the Navigation map plot for Noon and midnight Star sightings. Weather permitting. If clear enough skies got to navigation map for longitude and latitude and plot it on a real map. While in patrol areas use area maps.

For this to work I need fuel consumption rates at all speeds for all type boats. I know that fuel is measured from 100%.

I also need to find out what is the best speed to travel on the surface to conserve fuel and have max time on station in patrol areas. This is also by type boat.

I am going to use the max fuel capacity in gallons for each type boat. So does anyone have that data.

I would also like to now how was fuel consumption actual figured in real life and what navigational tool they used to figure this out. I suspect a side ruler. If so what was the formula?