Wednesday 4 April 2018

Galena the truth







TFSmith does not understand how blockades work.
Worse, he does not understand even the physical reality of what a blockade is composed of. Ships.





In Burnished Rows of Steel, we are told that the ironclad Galena is part of the “Home Squadron” based in New York. This Galena is the historical Galena, and would certainly have been in commission by that point, so what is the problem?
The problem is simple. The Galena was built at Mystic, Connecticut, which is at the far eastern end of Long Island Sound (actually slightly outside it) and did not enter commission until 21 April 1862 – this commission was also badly rushed, leaving her with balky engines and with problems with her design that needed to be corrected upon arriving in Hampton Roads. We can thus assume she would complete at about the same time in this timeline.


As per a previous post
we know roughly where the blockaders should have been, and we also know roughly where TFSmith places them.


Washington's advice:
'The line-of-battle ship might lie in safety in Fisher Sound, under the lee of Fisher Island, and the smaller vessels might watch the three passages between the islands which protect the entrance.'
(Captain Washington laid out the requirements for the blockade as consisting of one line of battle ship, one frigate, one corvette or sloop, and two gunboats. Milne uplifted his requirement so each squadron should have 2-3 ships of force; 2 corvettes "of Cadmus class"; 3 sloops "of Rinaldo class"; 1 gunvessel; 2-3 paddle steamers, but we will use the simpler version here.)


These positions, on a map, are as follows:






As should be immediately clear, the route taken by the Galena takes her right past the battleship. With her top speed of eight knots, the Galena would be unable to avoid engagement except by hugging the shore, and doing so would allow the lighter vessels of the blockade line to concentrate on her – certainly it would not be possible to easily make it the eighty-plus nautical miles to New York itself, especially as almost all British sloops, corvettes, frigates and battleships have a higher list speed than the Galena even before the ironclad's balky engines are taken into account.






As has already been covered, however, TFSmith has his own ideas for the positions of ships on the blockade. He is quite vague about the specifics, but it is clear that there is an outer blockade line consisting of Hero, Ariadne and Mersey and an inner blockade line including Meteor, Lily and Osprey. It is also clear that the two blockade lines are within signal range of one another by means of rockets and gunnery.
It is also clear that Meteor in particular is near Fishers Island, though as per the post the precise location is unclear. However, we have enough to make the following picture:




For obvious reasons, this is not a hundred percent definitive as TFSmith states that Hero, Mersey and Ariadne are guarding the three entrances to Long Island Sound around Block Island, but there are only two entrances to Long Island Sound around Block Island. The marked area can be seen as a worst case in terms of intercepting the Galena as it is further out than any other option.
It should be immediately clear that Meteor is almost directly athwart Galena's planned route, and would be able to engage her. Since Galena is faster, she might be able to run past; however, if alerted, the ships of the outer blockade line would be able to come in as they in turn are faster than Galena. Both Mersey and Ariadne have list speeds in excess of thirteen knots, and Hero has a list speed of 11.7 knots (via Busk's Navies of the World) and would make up between 3.7 and 5.3 nautical miles on the Galena per hour in a stern chase – assuming that Galena's machinery does not break down.
The distance from Block Island to the inner New York defences in Long Island Sound is slightly over one hundred nautical miles, and the distance for Galena's run is almost eighty-five; with this in mind, there is essentially no way in which the Galena can win a stern chase. (The time taken for Galena to reach the inner defences is 10.5 hours; the time for Mersey to do the same, starting at Block Island, is eight. Galena would be overtaken at some point before or around Bridgeport, over thirty nautical miles from safety.)
This is partly because TFSmith's own choice has placed two of the Royal Navy's fastest frigates right here.

In not realizing this, TFSmith has failed to properly appreciate that blockades are intended to stop ships moving in and out of them. It is also a tragic missed opportunity, as it would allow one of three things:
1) A battle in which the British do not simply get flattened, and in which the flaws of the Galena perhaps even give them some unwarranted confidence.
2) An exciting, tense situation by moonlight as the Galena creeps out of Mystic without alerting the British blockaders.
3) The Galena stuck in Mystic, unable to leave without the mounting of a rescue mission – one which the Union could reasonably debate internally about launching.


Of course, if the British had actually moved in January as they intended to do, a fourth option would present itself:
4) The British raid the undefended Mystic and burn the Galena before she is completed.
But this would never do, of course.


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