Crashed on the beach?

• Like Crusoe
• Marooned
• On Alcatraz, e.g
• Stranded like Crusoe
• Isolated
• Stranded, in a way
• On Alcatraz, e.g.

Wiktionary Word definitions in Wiktionary
a. Placed alone or apart, as if on an island.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Enisled \En*isled"\, p. a. Placed alone or apart, as if on an island; severed, as an island. [R.] ``In the sea of life enisled.'' --M. Arnold.