Mariner69
Well-Known Member
Looking at the later part of the film you can see that the motor boat (MB) has come from behind the sailing boat (SB) and is overtaking. The interaction between the two hulls comes into play and the bow of the SB is pulled towards the side of the MB. The SB has not kept a proper look out and is accelerating towards the entrance. The interaction acts to speed him up and it is clear that two boats will not make the gap. Better the SB goes dead slow ahead and allows the MB to clear. Both to blame for the incident.