Wed, Oct

Two vessels: left - "I intend to overtake you on your starboard side"; right - "Yes ( _ . _ . )" or indicate such doubt by giving at least five short and rapid blasts on the whistle or flashes. 

The term "vessel constrained by her draft" means a power-driven vessel which because of her draft in relation to the available depth and width of navigable water is severely restricted in her ability to deviate from the course she is following.