It was during this homeward voyage that Welladvice narrowly avoided the disaster of wrecking on the Isles of Scilly as Admiral Cloudesley Shovell had in the Scilly naval disaster of 1707 . Welladvice had with him a naval chronometer made by John Arnold . One night , when Welladvice calculated '' Barwell '' s position , he determined that she had to be near the Isles and moored her at midnight . Daybreak revealed the rocks in front of her
Scilly naval disaster of 1707
Scilly naval disaster of 1707
Barwell (1782 ship)