‘I’ll take a peep, I believe,’ he said, and swung easily up into the main-shrouds, mounting to the main-top. His pocket glass steadied on the speck of paleness away to the west. Smallish, but unmistakable with its tell-tale three masts, it was a chasse marée, a lugger, and the favoured vessel of the infamous Brittany privateers.

A smile of satisfaction spread across Kydd’s face: he was perfectly placed to crowd the luckless corsair against the unfriendly Cornish coast, and in any chase the rising seas would favour the larger Teazer. He hailed the deck below, ordering the necessary course change to intercept.

Almost certainly the vessel was returning after a voyage of depredation from somewhere like St Malo, a notorious nest of privateers, but now it had found Teazer athwart its hawse. Suddenly the image foreshortened, then opened up again – it was putting about, back to the open ocean.

It would be to no avail: Teazer held it to advantage and would converge well before it could escape. Kydd descended quickly and stood clear as the guns were cast loose and battle preparations made. The privateer was making a run for it. It was unlikely to take on a full-blooded man-o’-war but it was armed and dangerous with plenty of men so nothing could be left to chance.

The wind was veering and strengthening; there would be reefs in its soaring lugsails soon and, with the quartering fresh breeze as Teazer’s best point of sailing, he could rely on an interception before noon.

Within a few hours the sombre dark grey of the English coast lifted into view and they had gained appreciably on the privateer, which would soon be in range. Apart from a far-distant scatter of coastal sail there did not appear to be any other vessels and Kydd would shortly make his move.

‘Bolderin’ weather,’ said Purchet, the boatswain, staring gloomily at the approaching change. Curtains of white hung vertically against sullen dark cloud banks. Teazer’s open main-deck in a line squall was not best placed for play with the guns; it was a challenge to try to keep the priming powder dry on heaving wet decks while rain hammered down.