Now that Michael Lohan has returned from his vacation to Ft. Lauderdale with new girlfriend Bernadette, Lindsay's dad is ready to get back to business.

Papa Lohan tells X17online exclusively:

    "I'm excited to say I'm starting a rehab facility at sea on a $3.9 million dollar yacht that will set sail from Ft. Lauderdale. This is the first of its kind. The yacht sleeps 8 guests and 6 crew members. It'll be a great way to offer people a new way of receiving the valuable treatment they need."

Michael tells us his goal right now, aside from getting this new rehab business going, is to "focus on family."

In addition to relaxing in Florida with his new ladylove, Lohan also spent time at Inspirations residential treatment center for teens ages 14 to 18 with addictions to drugs and alcohol. The facility's website says it's "a place for healing, a time for learning, an opportunity for change."

Find out about Michael's plans to hit the airwaves ... after the jump.