Notice to Mariners - How long kept aboard?

CaptHH
the question was “were is it written in the cfr or nvic”. If you ask 10 captains what the answer is they will give you 10 different [U]opinions[/U]. do you know were it is written in the cfr’s or nvic ???

the only written information that seems to have been found is the NVIC 9-83

one captain told me 6 months, another said 1 year,which is it, with computers these days you can easily keep 20 years worth while taking up very little space,why bother if you do not need to, with ecdis out I am very interested if there has been an amendment to the above listed nvic
[U][I][B]once corrections have been made it is the option of the master whether to retain the Notices or not descussion 4 section a.[/B][/I][/U]