Two people were arrested at the Picton ferry terminal on Wednesday evening 1 October.
A 70-year-old man who had disembarked from the ferry was found to be in possession of one ounce of methamphetamine, which is estimated to be worth $5,000 and $7,000.
An associate was also arrested - a 50-year-old woman, who now faces a charge of supplying methamphetamine.
Detective Sergeant Ben Smith from the Blenheim Tactical Crime Unit says Police remain committed to taking drug dealers off the streets.
"We believe these drugs were intended for distribution in the Marlborough region.
"We are committed to disrupting the supply of illicit drugs in our communities and holding offenders to account."
The man is facing thirteen charges related to the supply of methamphetamine and cannabis. He is due to appear in the Blenheim District Court on 24 November.
The woman is due in Blenheim District Court on 24 November.
A related search warrant has been executed today and further arrests are being considered as Operation Memento rolls out.
"We welcome information from anyone who has concerns about methamphetamine production or distribution in their community. We rely on the eyes and ears of our community and whānau members who can help reduce the harm in our communities."
People are encouraged to report online at 105.police.govt.nz, call Police on 105, or report anonymously via Crime Stoppers on 0800 555 111 or www.crimestoppers-nz.org
If it is happening now, please call 111.
