A peeve but an important one - 20m is NOT 60ft!

[sama3033]

I see this all the time and it drives me ****ing crazy - including in magazines that should know better. 20m is not anything like 60ft - it's 65ft. A meter is 39 ins, not 36. After a serious dive those three extra inches mount up so catch up!!!

 

[Garrobo]

For all practical purposes 20 metres is 60 feet.

 

[Hoomi]

Spelling errors used to do much the same to me, or the use of the wrong homonym in a sentence.

I finally got tired of beating my head against the figurative wall, and quit worrying about it. If years of schooling didn't instill the education into their heads, why did I think I could succeed where teams of teachers failed?

 

[vladimir]

I see this all the time and it drives me ****ing crazy - including in magazines that should know better. 20m is not anything like 60ft - it's 65ft. A meter is 39 ins, not 36. After a serious dive those three extra inches mount up so catch up!!!

I am glad that people who find the 3.3 approximate conversion too challenging for their arithmetic skills are willing to advertise that fact. It's good to have some insight into whom you are dealing with.

 

[JPENDERGRAST]

I see this all the time and it drives me ****ing crazy - including in magazines that should know better. 20m is not anything like 60ft - it's 65ft. A meter is 39 ins, not 36. After a serious dive those three extra inches mount up so catch up!!!

How about 70' - is this a trick PADI RDP question???

 

[fppf]

Actually, technically speaking 20 meters is 65.6167979002624638 feet
After a serious dive those femto feet really can add up you know

 

[vladimir]

Actually, technically speaking 20 meters is 65.6167979002624638 feet
After a serious dive those femto feet really can add up you know

Well, you wouldn't use a conversion factor with ~20 significant figures with a measurement that contains 1 or 2, would you? If your depth gauge reads 20 meters, you can use 3.3 to arrive at 66 feet...and no femto feet.

 

[Tanked]

Actually, technically speaking 20 meters is 65.6167979002624638 feet

Its also 10.93613 fathoms

 

[fppf]

Oh, sorry let me correct my posting

20.0000000000000000 meters is 65.6167979002624638

 

[gcbryan]

I tend to think of the conversion in terms of atmospheres. One atmosphere is 10 meters therefore 30 meters is 3 atmospheres (gauge). Simply multiplying by 3 wouldn't be good enough in this case...90 fsw vs 99 fsw.