Clock is ticking to 1st July 2016 when loaded containers can only be loaded on board ships after providing verified gross mass (VGM) to the carrier in advance as agreed meeting the regulatory norms of Verified Gross Mass as stipulated by the country of loading.
Below are some industry guidelines on Verified Gross Mass
U.K. Maritime and Coast Guard Agency
India
http://www.dgshipping.gov.in/writereaddata/ShippingNotices/201605110435420791574ms_notice4_2016.pdf
United States Coast Guard
http://mariners.coastguard.dodlive.mil/tag/verified-gross-mass/
World Shipping Council
http://www.worldshipping.org/industry-issues/safety/cargo-weight
European Chemical Industry Council + Freight Forwarding Trade Association
Others
http://www.worldshipping.org/industry-issues/safety/faqs
http://www.ttclub.com/loss-prevention/publications/container-weighing/
http://ichca.com/container-weighing
Maersk Line
http://www.maerskline.com/en-us/shipping-services/verfied-gross-mass
CMA CGM
http://www.cma-cgm.com/products-services/verified-gross-mass
Hapag Lloyd
https://www.hapag-lloyd.com/en/news/news_page_46930.html
UASC
MSC
Conweigh