Knowledge of basic sailing terminology, parts and functions, helm commands, basic sail trim, points of sail, buoyage, seamanship and safety including basic navigation rules to avoid collisions and hazards. Auxiliary power operation is not required.
However, there are some other conditions could cause sores and blisters on the vagina: 1  Genital herpes: Genital herpes is a viral infection caused by the herpes simplex viruses type 1 (HSV-1) or type 2 (HSV-2).  A person infected by genital herpes manifests blisters and sores in the vaginal area.
Blood blisters are commonly caused by accidents in which the skin is pinched by a tool, mechanism, or heavy weight without protective gear. Blood blisters can also arise from forcible human contact, including grappling. Blood blisters also may occur with friction caused by constant rubbing of skin against a surface.