You see a white marker with black vertical stripes. what should you do? do not pass between the marker and the shore. keep the marker on your port (left) side. use the marker as a mooring buoy if you wish to tie up. prepare for bad weather.

The right option is; do not pass between the marker and the shore.

A white marker with black vertical stripes is a non-lateral marker which serves as navigational aids that give information and guide the vessel operators along the water areas. A white marker with black vertical stripes signal or indicate an obstruction to navigation. When a vessel operator sees a white marker with black vertical stripes, he should not pass between the marker and the shore.