Mr. Polye raised the concern, following his trip to Buin's famous Kangu beach in South Bougainville, where it shares a sea border with the country.
The beach is where soldiers from a PNGDF platoon were massacred during the Bougainville crisis.
He said he only learnt that a few officers from Border Development Authority provide surveillance over the region's sea along the border.
"When our THE party is given the mandate to lead the country, our border posts will be properly resourced with adequate soldiers, customs and BDA officials to provide effective surveillance," he said.
Polye further said the trade along the border was not that thriving when compared to PNG-Indonesia border.
He added he also learnt that only traditional trade or barter system was common at the border.
He promised to the people that he would build a modern border post at Kangu if he led the next government.