Francis Russell Hart 
Attacks Upon the Spanish Main by Admiral Vernon [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. On the fifth of November. This squadron set sail. The Sheerness be ing sent as a scout in the direction of Cartagena. While the rest headed for Porto Bello, off which port they lay to on the twentieth of that month. On the twenty-first, he attacked the Iron Fort. So called, at the harbor’s entrance, with his full strength at close range, and with such vigor that, after a short but spirited resistance.