No, although air is released, destabilizing the water, you will not be 'sucked' in, you just will have trouble staying afloat. It's not a suction, just a weak platform.
A boat will sink if there is a hole in the hull below the water level. Or, if too much cargo is loaded, sinking the boat (ship) so low in the water that it either capsizes, or the water cascades inboard over the sides of the boat.
Because the mass of the boat is less than the mass of water the boat displaces.
When the density of entire assembly (boat, peoples, products, equipments, water etc.) has a density greater then the water density the boat is sinking.
Small toy boat: Origami and make a boat and then rub the candle underneath the boat and it will in water
The weight of the boat displaces the same weight of water, and while there is still sides of the boat above the surface, the boat will float. If such an open boat is swamped, the gunnels may sink to sea level, and may even sink beneath. Usually, water-tight compartments, light, floating material, and any wood in the boat's construction, will help prevent the boat sinking entirely, if at all.
The answer is simple, the amount of weight a boat can hold depends on how big your boat is the bigger the boat the more water it displaces the more weight it can hold.
Apparently she got on a boat took over it and saved other people from the water herself included
a life boat
The lifeboat is the most commonly used boat for rescuing passengers on a sinking ship.
The Italian boat that is used to travel in the sinking Italian city, Venice, is the gondola.
The water displaced created a force of buoyancy sufficient to keep the boat from sinking. This is the same idea with steel ships. If you take a ball of steel and put it in the water, the steel sinks, but large battleships made entirely of steel float. Why? When as ship presses into the water, it pushes against the water on all points under the water's surface. The water pushes back, more weakly than the boat (otherwise the boat would sit on the water the way a car "sits" on land), but enough to keep the boat from completely sinking.
Myth / fable / fantasy