The boat is stationary, so the forces are balanced. The upthrust and the weight of the boat must be equal in magnitude, but opposite in direction.
The person at this point is stationary, so the forces must be balanced. This means the person's weight and the force from the rope must be equal in size, but opposite in direction.
The forces are balanced, as the person is not moving. The vertical component of the pull of the rope and the friction are equal and opposite to the person's weight. The horizontal component of the pull of the rope is equal and opposite to the push from the wall.