Manx resident John Whittaker's company will pay shareholders a total dividend pot of £153.9 million this year.
Peel Ports' latest company accounts saw pre-tax profits fall from £397.3 million to £141.6 million, with turnover dropping from £696.3 million to £693.7 million.
The company, based in Liverpool, operates in Glasgow, London, Manchester and Dublin - Mr Whittaker's Peel Group owns a 68 per cent stake in it.
Figures in the accounts show Peel Ports spent more than £208 million on building projects last year.
Steam Packet brings out the Ben-my-Chree as a contingency
Post affected by Manxman cancellations
MGP rider says 'I'll be back' following crash on Sunday
Manxman wins extreme triathlon in Norway
New café tenants have moved in to The Roundhouse
Authorities urge cyclists to get off their bikes through pedestrian zones
Booklet launched to protect the Island's sea-life
Emergency response activated as smoke detected onboard the Manxman