There were two large Men of War moored to defend the Entrance of _Boca-grande_, but that there was a Fascine Battery begun upon each Point, seems to be a Secret only known to the Author; for no Mention was made of any such during our Stay upon that Coast, nor upon reconnoitring that Entrance into the Harbour, could the least Traces of them be perceiv'd. The little _Fort de Chamba_ was not finish'd, nor had upon it one Gun; nor was there the least Appearance of one, on what the Author is pleased (Page 49.) to call a Fascine Battery of twelve Guns: From same Fascines being placed in order upon the Shore, it was believed that the Enemy had Thoughts of erecting a Battery on that Place. The Author's Description of _Boca-Chica_ Castle, _&c._ seems to be tolerably exact, and I cannot omit to remark the justness of his Expression, when he mentions the Bomb Vessels being got near enough to divert the Town; for in Truth they were posted at so great a Distance, that they seem'd to be sent in with no other Intention. That the City of _Carthagena_ is to the Land-side, fortify'd by double Walls, and double Ditches, flank'd by strong Bastions, is an undoubted Truth; but I must dissent from what the Author alledges, of the Water at the Head of the Harbour, being shoal so far off, that Ships cannot come near enough to do Execution with their Guns. Experienced Pilots, and Masters of trading Vessels, who have been much conversant in that Harbour, do (and will when Occasion requires it) testify the contrary; but nothing can be a stronger Proof of there being sufficient depth of Water for our largest Ships, than that the Station of the _Spanish_ Galleons, is very near the Walls, for the Convenience of taking in their Lading. It is well known, that Monsieur _Ponti_ sent in his Men of War (amongst which was the _Sceptre_ of eighty-four Guns) to batter the City, and with so good an Effect, as in a short Time to oblige them to surrender. But a still more recent Proof of there being sufficient depth of Water, is the celebrated Admiral _Vernon_'s having ordered in the _Galicia_, a _Spanish_ Man of War of sixty-six Guns: This Vessel was fitted up for battering in a very extraordinary Manner: _Merlons, or Cases, six Feet thick, rammed with Earth, or Sand, were formed between the Port-holes_, which occasioned her drawing more Water, than any of our eighty Gun Ships; notwithstanding, with her sixteen Guns mounted, _only_, she did considerable damage to the City, before she could be demolished. That the _Spaniards_ have no great Dependance upon this supposed Shoalness of the Water, is very evident from their having lately erected a Battery of forty large Pieces of Cannon, for the defence of the Town on the Side towards the Harbour; a very unnecessary Expence, if the Water is there so shoal as to prevent the near Approach of our large Men of War.