He also warned senators that they would also suffer from the impacts of a government collapse if they failed to perform their duties properly.
"The new government is like a new boat. But this new boat will have difficulty moving forward. Unlike in the old boat, the captain now has to please his crew members," Wissanu said.
Warming to the analogy, he said that the slim majority in the House of Representatives meant the new government "boat" helmed by General Prayut Chan-o-cha would be in danger of being swamped by water.
"Rather than posing dangers, this situation will keep the occupants alert. What's important is that the captain, his crew and the passengers have to work together," Wissanu said.
"They need to help bail the water out, or at least stay calm and pray. Don't make trouble. If the boat capsizes, they all will suffer and the whole country will be in trouble," he added.
"I also would like to tell the senators something. Although they are not among the crew or passengers of the boat, they will also be affected if it sinks. So they should do their duties properly, for the benefit of the public."
Wissanu, now in charge of the government's legal affairs, is expected to become part of the new coalition government.