SUBSIM Radio Room Forums - View Single Post

sharkbit · 01-19-11, 08:11 AM

Like everyone has said, it falls in the 8 knot range.
If you want to find out exactly, set a speed, go to TC16 and have your navigator check your range to empty. Set a different speed and repeat. Check various speeds and you will find the most efficient speed where the range peaks and then falls off again.
Try to do this on a calm day because conditions will change the numbers. As long as you do it in the same conditions, it gives a pretty good idea of the most fuel efficient speed for the particular type of boat.

I do this each time I get a new type of boat. I chart it as well as the speeds(surfaced and submerged) at various settings, as well as reverse, and the speeds when running decks awash so I know exactly what speed I should be running at each setting and condition. Sea state chnges these numbers, but at least I know what I should be getting.

01-19-11, 08:11 AM	#7
sharkbit The Old Man Join Date: Apr 2008 Location: Denver, CO Posts: 1,529 Downloads: 334 Uploads: 0	Like everyone has said, it falls in the 8 knot range. If you want to find out exactly, set a speed, go to TC16 and have your navigator check your range to empty. Set a different speed and repeat. Check various speeds and you will find the most efficient speed where the range peaks and then falls off again. Try to do this on a calm day because conditions will change the numbers. As long as you do it in the same conditions, it gives a pretty good idea of the most fuel efficient speed for the particular type of boat. I do this each time I get a new type of boat. I chart it as well as the speeds(surfaced and submerged) at various settings, as well as reverse, and the speeds when running decks awash so I know exactly what speed I should be running at each setting and condition. Sea state chnges these numbers, but at least I know what I should be getting. __________________ “Prejudice is blind. There will always be someone who says you aren’t welcome at the table. Stop apologizing for who you are and using all your energy trying to change their minds. Yes, you will lose friends, maybe even family. But you will gain your self-respect. You will know your worth. Once you have that, nothing can stop you.”