The Vanuatu opposition leader, Edward Natapei, says he has confirmation that next Thursday a no confidence motion against Sato Kilman's government will be debated.
While conceding that his side may not have the numbers to topple the government, Mr Natapei says, among other things, the affairs surrounding the superyacht Phocea have damaged Vanuatu's reputation.
Mr Natapei says eight points will be raised.
He says the prime minister owes the nation an explanation about his financial dealings with former and current diplomatic passport holders.
"The prime minister's failure to reply in an honest manner when questioned over the reception of funds from a gentleman, called Pascal Anh Quan Saken."
Vanuatu's opposition leader, Edward Natapei, says publicity around the Phocea, owned by Mr Saken, has been negative.