The Lion was lost while being towed to Yarmouth when she grounded on a sandbank.
From the en.wikipedia.org
Most trolling is done by following a slopping shoreline, structure or sandbank.
From the couriermail.com.au
The sandbank blocks the water flow and creates a whirlpool under the lake.
From the theepochtimes.com
We passed a sandbank where several boats were beached in the low tide.
From the boston.com
A humpback whale stranded on a sandbank near the island of Texel in the northern Netherlands.
From the washingtonpost.com
Tonight the crew has arranged a special on-shore candle-lit barbecue on a mid-river sandbank.
From the au.news.yahoo.com
On 18 January 1916 she caught fire, and was burned out on a sandbank in the Bristol Channel.
From the en.wikipedia.org
On July 2, it ran aground on a sandbank off the West African coast, near today's Mauritania.
From the en.wikipedia.org
Unfortunately I misjudged the depth and hit a sandbank head first.
From the express.co.uk
More examples
A submerged bank of sand near a shore or in a river; can be exposed at low tide
A shoal, sandbar (or just bar in context), or gravelbar is a somewhat linear landform within or extending into a body of water, typically composed of sand, silt or small pebbles. A spit or sandspit is a type of shoal. ...
Sandbanks is a small peninsula or spit (1km or 0.39 sq mi) crossing the mouth of Poole Harbour on the English Channel coast at Poole in Dorset, England. ...
A ridge of sand along a shore that is partially or totally submerged and thus a hazard to shipping