Two boats in a flowing river are sailing sideboard with only a narrow space between them. What happens to the fluid speed and the pressure between the two boats?

As the two boats sail side by side in the flowing river, the fluid speed between them increases due to the constricted space. According to Bernoulli's principle, as the speed of the fluid increases, the pressure in that region decreases. Therefore, the pressure between the two boats will be lower than the pressure outside of them. This effect can create a slight suction between the boats, potentially causing them to be drawn closer together.