sunken rock

sunken rock

[′səŋ·kən ′räk]
(navigation)
A rock that is a potential danger to navigation; for cartographic purposes, it is a rock whose summit is below the lower limit of the zone for a rock awash.
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References in classic literature ?
Instinctively he lowered himself in the water, only raising his head to breathe from time to time, and Kaa came to anchor with a double twist of his tail round a sunken rock, holding Mowgli in the hollow of a coil, while the water raced on.
You can't see them," she said; "they are always out of sight, even when the tide is at the lowest - but there are some hideous sunken rocks there.
Built upon a dismal reef of sunken rocks, some league or so from shore, on which the waters chafed and dashed, the wild year through, there stood a solitary lighthouse.
where it encounters the sunken rock constitute the "many"; the
Entering the garden from Washington Avenue, you climb a few steps, pass through monumental steel gates and find yourself on a bare concrete plaza, relieved just a bit by a sunken rock garden to one side that serves as a buffer against the adjacent parking lot.
Approaching a corner, the Dumfries-born driver ran slightly wide and hit a sunken rock that hammered into the rear left tyre.
Bosses have contacted the Heritage Lottery Fund and are considering sending divers down to see if the sunken rock can be lifted back to the surface.
The surprising Sunken Rock Garden has a Japanese bridge and a tea house and various exotic plants include the towering gunnera plant from Brazil with its vast leaves as wide as 9ft high and towering stalks as high as 10ft.
Neighbours Ron and Betty Axford returned from holiday to find their sunken rock garden heaped up as a pile of rubble.
100 YEARS AGO: The steamer Alert which left St Peter Port, Guernsey, yesterday for a cruise around the island struck a sunken rock and commenced to fill.