Tunks Park Boat Ramp sits on Middle Harbour at Brothers Avenue, Northbridge, on Sydney's Lower North Shore.

The concrete ramp features two lanes and a floating pontoon to assist with launching and retrieving vessels, and is accessible at all tide levels, though the ramp's shallow angle near the bottom warrants extra care at low water.

The facility is council-owned and in excellent condition, with lighting and a washdown area on site. Parking is free but limited and fills quickly, particularly on weekends when the surrounding park's sports fields draw additional visitors.

The ramp is one of the most popular launching points for access to Middle Harbour, used by powerboaters, trailer-sailers, kayakers, and recreational fishers alike.