Showing posts with label Coronel. Show all posts
Showing posts with label Coronel. Show all posts

Thursday, December 20, 2012

The ships of 1914 -- Spee's armored cruisers


Scharnhorst -- model by Navis


The central players in the drama of the 1914 affair were the sister ships KMS Scharnhorst and KMS Gneisenau. These two warships represented the heart of the military threat posed by Von Spee’s squadron.  The accompanying light cruisers had a role to play, but they were minor warships and could be countered by similarly minor combatants that would have negligible affects on the naval balance.

                The Scharnhorst and Gneisenau, in contrast, were capital ships, albeit of an obsolescent type in 1914.  They were armored cruisers – a type of capital ship that had a relatively short heyday as such major warships go. The first “armored cruiser” were in the 1870s and the very last armored cruiser was the HMS Defense, completed in 1908, so the total length of time this type was in first-line service was barely four decades.
                Still, while they didn’t serve very long as first-line units, they did play prominent roles in the several of the battles that occurred during the pre-dreadnaught era, notably the Battle of Santiago in the Spanish-American War and the Battle of Tsushima in the Russo-Japanese War. 

                The main reason why armored cruisers enjoyed their brief time in the sun was the undeveloped state of naval gunnery during the closing decades of the Nineteenth Century. Cannon technology grew by leaps and bounds during that era, resulting in naval artillery that could fire at unheard-of ranges with great accuracy. During the naval battles of the American Civil War and the Battle of Lissa, gunnery duels between ships were often still  measurable in hundreds of yards and it was practicable for ships to get close enough to use ramming tactics. This was despite the fact that the guns, themselves, could easily hurl projectiles for many miles.  The ranges the guns could fire increased even more over the ensuing decades but the problem of actually hitting the target remained. Long-range gunnery was inherently challenging, but naval gunnery added additional complexities as both the target and the firing ship were constantly changing position. At the Battle of Manila, Dewey’ fleet managed to achieve only 2-3% hits on the nearly immobile Spanish squadron. The destructive power of modern artillery was sufficient, however, that this was enough to annihilate the Spanish squadron. 

                Under the gunnery conditions of the late nineteenth century there seemed to be a lot to be said for volume of fire. The very largest naval guns, like those carried on battleships, were very destructive, but had such a slow rate of fire that there was little opportunity a gunner to successfully use the information from a miss to adjust  his fire to get closer on the next shot. Too much time would pass between shots and the relative positions of the ships would likely be so different that each shot was basically starting anew.  The higher rate of fire of smaller guns would not only throw a lot more metal in the vicinity of the target, but provided some chance for adjusting fire from misses.  Because of this, battleships of the ear commonly carried a mixed armament of some very heavy ship-smashing main guns, some medium caliber secondary guns and a tertiary battery of quick-firing guns for defense against light craft. 

                Armored cruisers essentially traded the large main battery guns for additional endurance and speed compared to battleship, but were often armored at similar levels and carried as their main battery guns equal in size to the secondary batteries of battleships.  As such they were generally able to stand in the line of battle alongside the battleships, as they did at Tsushima.

                By 1914, however, the situation had dramatically changed, and the armored cruiser was no longer able to stand in the line of battle. The Dreadnought concept of an all-big gun battleship and the similar Invincible class battle cruiser had changed the equation. Improvements in the large guns had increased their rate of fire and improvements in gunnery techniques were promising improvements in accuracy that suggested that having a uniform battery of large guns would be more effective than the mixed armament of earlier ships and that armored cruisers could no longer safely operate in the main battle line. 

                Still, the Scharnhorst and Gneisenau were still powerful ships, especially on detached stations such as the Far East, where dreadnought-type warships were still uncommon. 

                The two German ships were conservative designs, very well-built as was usual for German naval construction and well-armed. They were identical sister ships, and therefore worked well together as unit. Their main battery was a total of eight 8.1-inch guns,. Four of the guns were mounted in twin turrets fore and aft, but the other four were mounted in casements on the side, which meant that the total broadside was only six heavy guns.  Also in casements were the secondary battery guns, eight 5.9-inch guns, for total broadside of four. 

                They were well-protected with belt armor of 6 inches and a 2-inch armored deck and, like most German warships, well compartmented. 

                They were not especially speedy for armored cruisers, with maximum rated speeds of around 22 knots. This was enough to outrun any pre-dreadnought battleship but markedly slower than many British armored cruisers and hopelessly insufficient to outrun one of the new battle cruisers. This speed deficiency would play a major role in the outcome of the campaign and was a major consideration a Spee weighted his options.

                A bare recital of stats is not the sum total of a warship’s effectiveness in any era, but its especially important to note the more intangible aspects when evaluating the ship in this campaign. 

                The nature of the German East Asia Squadron’s mission, as  a detached squadron on a distant foreign station, had a major impact on its efficiency. All the crew members were long-service regular navy men, without any of the conscripts that filled out the rosters of homeland-based vessels. It was an elite posting and the two ships were widely regarded as efficient and well-led.

                This manifested itself in at least two ways. First, both ships were noted for their proficiency in gunnery, being recent and multiple-year winners of the German Navy’s gunnery competition. This had obvious implications in the coming engagements, as the tow German ships could be counted on to be very dangerous adversaries.

                Less visibly, but also vital, is that the two ships were evidently very well-served by their engineering crews. In an era when large ship engineering plants were still relatively new and often temperamental, the exceptional reliability of the two ships played a key, if little noted roles in the campaign. Von Spee confidently set forth on a journey of extraordinary length and with little available support if something should go wrong with his systems. In the event both ships performed exceptional feats of steaming right up until their final moments.

Wednesday, December 19, 2012

Great admirals and Jackie Fisher

I've been doing a lot of research recently about the Dreadnought era for a project I'm working on, and if there's an unavoidable figure when you are talking about dreadnoughts, it's John Arbuthnot Fisher, known as "Jacky," twice First Sea Lord of the Admiralty and the father of the modern Royal Navy.

From midshipman ...
Fisher is a fascinating character study, of course, but there are a lot of fascinating characters who are disastrous leaders. Leaving aside his indelible personality, I'd like to consider the prejudice against non-"fighting" commanders among many when they consider the "greatness" of  a leader.

Now, undoubtedly, combat is the final arbiter, when it comes to a clash of arms. In the end, the man in the trench has to be given due consideration on the day of battle. But, especially in modern war, events at the trench level are usually the culmination of a long progression of events and forces that begin long before the trench was dug -- and sometimes even before the trench digger was born.

Because of this, its not uncommon for a leader to play an enormous role in the eventual victory of his side, while never being close enough to hear the sound of the guns, From World War II we have the example of George C. Marshall, who was sorely disappointed when Eisenhower was picked to be Supreme Commander of the Allied Forces. FDR was convinced that Marshall did much more for the war effort as Chief of Staff -- and few doubt that FDR was entirely correct. Marshall, himself, probably realized it.

... to First Sea Lord -- twice
 Admiral Chester Nimitz is another well-known example. Many accounts consider Yamamoto's opponents at Midway to be Fletcher and Spruance, the admirals in tactical command. But in many ways his real opposite number was Nimitz -- and in a real sense, the fact that Yamamoto was at sea and Nimitz was not is an irrelevant detail.

Likewise, Jackie Fisher was not at sea in 1916 when the Battle of Jutland was fought. Indeed, he wasn't even First Sea Lord any more, having been retired from the job for the second time the year before. But the British Grand Fleet at Jutland was Jackie Fisher's fleet -- as sure as it would have been if he had been on the bridge of the HMS Iron Duke himself. Admiral John Jellicoe, who was on that bridge, was Fisher's hand-picked man to lead the fleet. There was hardly a ship in the entire fleet that was more than a decade old. With the exception of a handful of older types, nearly all the ships were directly or indirectly his brainchild. The dreadnought battleships and battle cruisers were his conception. The fleets of destroyers, too. He coined the term "torpedo boat destroyer" for the new class of ships.


Circumstances prevented Fisher from ever leading a fleet into battle, but I'd rank him right along with Nelson, myself. 






Adm. Chester Nimitz is another  was a

Sunday, September 30, 2012

Coronel aftermath -- a solitaire session

The victorious German East Asia Squadron in Chile after the battle of Coronel


As the Battle of Coronel was being fought in the early evening of Nov. 1, the old battleship HMS Canopus was struggling against heavy seas and a balky engineering plant to catch up to Cradock's out-gunned squadron.  Cradock had left the Canopus behind, believing it to be too slow to be useful. Churchill had expected the Canopus to be  a"citadel" that would protect Cradock's weaker armored cruisers should they run into Spee's entire fleet. Spee, for his part, indicated after the battle that he thought he might have lost had the battleship been present.

In the actual event, the British light cruiser Glasgow escaped the massacre and warned the Canopus of the disaster. The battleship promptly turned around and fled -- slowly -- back to the Falkland Islands, eventually being joined by the Glasgow on the way. 

There were innumerable ways that the Glasgow could have failed to get word to the Canopus about the battle's outcome, however, so it's not too much of  stretch to wonder what might have happened if the Canopus had continued north and run into Spee's squadron before he turned around to go to Valparaiso to recoal and reorganize. 

So it's dawn on Nov. 2, and lookouts on the HMS Canopus see smoke on the horizon to the north which soon reveals itself to be coming from the two German armored cruisers Scharnhorst and Gneisenau and the light cruiser Nurnberg. (The Dresden and Liepzig had been detached to scout for the British survivors of the night battle.)

The tactical problem facing the captain of the Canopus is simple. He can't run away, the Germans ships are almost twice as fast. While his 12-inch guns slightly outrange the German 8-inch guns, his slow speed means he can't control the range as well. 

Spee's decision is much more complex. While he won the battle against the British cruisers at a trifling cost in damage and casualties, the battle did expend about half his ammunition. This alone was a very strong argument for avoiding combat worth any new force encountered. He probably only had enough ammunition for one more fight. Prudence would have dictated that Spee use his superior speed to steam away from the Canopus, possibly detaching the light cruiser to keep an eye on the battleship until the British decided whether to press on or withdraw. This is the most likely outcome. 

On the other hand, Spee was a very aggressive commander and it would have been tempting to run up the score, so long as he avoided taking serious damage or using too many of his remaining shells. 

So let's examine how it might have played out. This makes a good solitaire scenario. The Canopus has few decisions to make. It can't run, so it will turn broadside to the approaching Germans and fire as long as it is able.  I'm using the 1970 Victory at Sea rules for this fight. 

Spee, on the other hand, needs to execute his approach with care. The safest thing to do would be to stay at long range, allowing him to safely break off the battle at any point. But long-range gunnery uses up a lot of ammunition for relatively fewer hits. Closing the range will allow the Germans ships to bury the battleship in a deluge of damaging fire -- but risks disaster if a German ship gets badly hit. 

We will assume Spee decides to boldly close the range on the theory that he night as well decline to fight at all if he was to engage in an inconclusive long-range gunnery duel. 

The range is 15,000 yards as the two forces sight each other. The German column is comprised of the Scharnhorst, the Gneisenau and the Nurnburg in that order.

The action commences with HMS Canopus hauling hard to port to bring her broadside to bear, while the German squadron pours on the goal to close the range at 20 knots, angling to port so as to unmask batteries and heading in the opposite direction of the British ship in case it makes sense to disengage later. . The light cruiser turns so as to remain on the unengaged side of the battle line.

At 14,500 yards it's a tough shot for each side. The base "to-hit" chance at that range is "16 out of 36" which is halved to "8 out of 36" for World War I fire control. This translates to a 22.2% chance to hit, or a 3 or a 7 on two dice. All secondary guns are out of range. 

The Canopus rolls a 3 and a 6 for a hit! The 12-inch shell lands on the deck of the Scharnhorst, doing 900 points of damage. The shell does not do critical damage, but it definitely gives Spee pause. 

The return fire from the Scharnhorst is also effective, with one of the twin turrets landing a hit on the deck of the Canopus, doing 1,225 points of damage on the old battleship. While styled a "battleship," the Canopus belt and deck armor is no thicker than the armor on the armored cruisers. The Gneisenau is yet out of range.
At 12,500 yards the broadsides continue at "9 per 36" or a 4 or 7 to hit.  The Canopus lands again on Scharnhorst, this time hitting and penetrating the belt armor for 1,020 more points of damage for a total of  1,920.  More critically, this hit slows the Scharnhorst's speed by 10 knots.  This is the last straw for Spee and he decides it's time to call it a day, especially because none of his return shots from either armored cruiser scores that turn. 

The German armored cruisers start to turn away while the Nurnburg starts to lay down a smoke screen to cover the withdrawal.  A parting shot from the Canopus hits the Scharnhorst again for another 900 points of damage, total 2,820.  The draw for a critical hit, however, provides  a very dramatic end as the Scharnhorst's magazine explodes! 

The Scharnhorst finds the range on the Canopus in return, but the 8.2-inch shell bounces off the belt armor.

The surviving Germans ships withdraw out of range under cover of smoke  and the Canopus is far to slow to chase them.

Well, that little play-through suggests that there was little to be gained by messing with a battleship -- even an indifferent one such as the Canopus! Maybe Churchill was right after all ... 



Monday, July 9, 2012

Things wargames miss

HMS Argyll. Note the low-to-the-water midships gun and the lower gun on the aft quarter.

One of the limitations of wargames is the annoying complexity of the real world while the erstwhile wargame designer is striving to keep his game rules reasonably succinct. Actual operations are filled with examples of unforeseen complications that can have a significant effect in a given circumstance, but are very hard to take account of in a systemic way. This is one of the reasons why a certain amount of randomness doesn't bother me in wargames because the real world is fluke-filled.

What prompts this discussion is the additional handicap that the British armored cruisers at Coronel suffered due to the rough sea state during the battle -- a problem generally ignored in most wargames.

On both the HMS Good Hope and the HMS Monmouth, as well as the similar HMS Argyll shown above, some of the secondary guns are mounted one above the other in battery along the broadsides. Presumably there were some compelling engineering reasons for this arrangement -- maybe it eased ammunition handling or simplified construction somehow. But service conditions revealed that the lower gun in the set was too close to the water to be usable if the sea was too rough. This had the effect of cutting the secondary batteries of the Monmouth and Good Hope in half. The Argyl design was somewhat modified as the problem became apparent and only two of the 6-inch guns on the ship's broadsides were still subject to the problem. Eventually in the surviving ships of the Monmouth class the lower guns were actually moved up to the topside deck and the sea-level gunports plated over.

Even Larry Bond's Fear God and Dread Nought rules, which are justly considered exhaustive, only assess an accuracy penalty for gunfire in heavy seas, but don't formally include a way to account for guns rendered completely unusable by the waves. this is the sort of thing that can be handled by scenario special rules, of course, but it requires that the scnerio designer have dome the sort of in-depth research needed and is also the kind of thing that's not likely to be included in a "what-if" scenario. It's the sort of thing to keep in mind, however, when considering the "on-paper" strength of a unit.

Sunday, July 1, 2012

Death at Sea -- book review


Death at Sea is  a privately published "novelistic history" of the saga of the German East Asiatic Naval Squadron of World War I -- the ships of the famous Graf Maximilian von Spee. Written by Eric Dorn Brose, a professor of history at Drexel University in Philadelphia, it's an odd book in many ways, but, I think, of unusual interest to wargamers and students of "what-if" history in general.

With the centennial of the First World War approaching rapidly, I think there will be heightened interest in the topic. Most of the interesting naval action happened early in the war, especially in the summer and winter of 1914 and 1915. Perhaps the most dramatic saga was that of Von Spee's squadron, which resulted ion two bloody naval battles that resulted in several ships being lost with all hands.

Professional and academic historians generally have a strong aversion to "what-ifs" and speculative history. They often note, correctly, that once you go down the rabbit hole of speculation there's little to guide you in the maze. The worst sorts of speculative history will set out to "prove" some wild-ass pet theory about what could have happened or should have happened. A year or so ago I reviewed Tom Carhart's Lost Triumph: :Lee's Rea;l Plan at Gettysburg and Why It Failed which argued, unpersuasively in my view, that Lee's real plan at Gettysburg on the third day was to coordinate Pickett's Charge with an attack on the rear of the federal army by JEB Stuart's cavalry corps.  Incredibly Carhart argues that the plan would have worked had it not been for Custer and some other federal cavalry commanders who foiled the plan. As I pointed out, a look at a wargame map shows that Carhart's theory runs aground on the realities of time, space and forces present. He got carried away, which is easy to do when you are an author and have complete control over the narrative. Wargamers, on the other hand, know that the opponent has  a vote and  neat plans are unlikely to survive contact with the enemy.

Yet speculative history is the life-blood of wargaming, and all wargames are, to a certain degree, speculative histories. Death at Sea is unusual because Brose freely engages in speculation about how things may have turned out if certain key decisions had been made differently. As it turns out the Spee saga is rich in those kinds of decision points. Standard histories of the events in question tend to emphasize the foregone nature of the two major battles.  At Coronel an outclassed British squadron had no chance against Spee's powerful ships and was quickly dispatched. And a month later Spee's squadron was equally outclassed by  a powerful British battlecruiser force that leisurely annihilated the Germans.

Brose raises interesting questions about both battles, and explains how they might not have been as lopsided as they appeared, particularly if the losing commanders had made better decisions. Both Spee and the British commander at Coronel, Rear Adm. Sir Christopher Cradock, perished in battle and were martyred heroes to their respective publics, so there was long a reluctance to second-guess their performance. Likewise, the British victor at the Falklands, Adm. Frederick Sturdee and the First Lord of the Admiralty, Winston Churchill, made questionable decisions that could easily have led to disaster. Yet things turned out OK and the rush of later events swept away most questions.

Brose also points out any number of alternative engagements that might also have occurred had deployments been just a little different.

Brose's approach to thew whole story is an unconventional one, especially for an academic historian, which probably explains why this is self-published. It bears the hallmarks of something written for the pleasure of writing it, not to burnish some academic reputation. It is, however, a serious work, for all that, and Brose explains his souring quite clearly and lays out the rationale for his fictionalizing.  Some degree of fictionalizing is almost inevitable in  a work about this battle because so many of the key witnesses died. As I alluded to above, three of the armored cruisers involved were lost with all hands and a fourth was sunk with barely a hundred survivors. Several of the light cruisers were also sunk with very heavy loss of life. Most of the senior officers of the two defeated squadrons were among those lost, so we cannot know what they thought or why they made their decisions.

He calls it a "novelized history" because it's a sort of hybrid work. It's not a full scale novelization in the mode of Michael Shaara's The Killer Angels. I'm not sure Brose has the proper touch to pull off something quite like that. His fictional story line vignettes seem a bit contrived and conventional to me. He is more successful at fleshing out actual events with conversations that at least advance the narrative efficiently. I think readers expecting something as literary as The Killer Angels will be disappointed. Brose is still at heart a historian , not a novelist. On the other hand, the book is much more free-wheeling a read than most histories, especially histories that deal in depth with technical and tactical topics like naval warfare at the ship-to-ship level. While I think some readers, therefore, will find it neither fish nor fowl and be turned off, I think the book makes an excellent resource for the wargamer and the counterfactualist.

For example, Brose spends a considerable amount of time discussing the choices available to Cradock at Coronel, suggesting that the British admiral was far more aggressive than wise and made a challenging tactical situation far worse by accepting battle immediately and letting himself be outmaneuvered on top of it. In particular Brose suggests that Cradock ought to have considered avoiding a decisive commitment as evening fell on Nov. 1, 1914, and try to lead Spee's squadron south until Cradcok could rendezvous with the battleship Canopus. Brose rightly points out that Canopus was hardly the "citadel" that Churchill imagined. And indeed,  the "battleship" was hardly better armored than the armored cruisers Good Hope and Monmouth that Cradock already had. But it did have four 12-inch guns, which would have tripled the long-range firepower of Cradock's force. And Canopus' later marksmanship at the Falklands strongly suggests that it would have been a more dangerous opponent than the reservist-manned Good Hope and Monmouth, which barely managed to hit Spee's fleet at all. And this was the key point, of course, because any damage to Spee's cruisers was a critical danger to their survival. They were thousands of miles from any shipyards for repair or replenishment of ammunition. With three capital ships to shoot at, the two German cruisers would have necessarily used up more of their ammunition even in victory, and they were just one lucky hit away from disaster at all times. It's probable that Spee would still have defeated Cradock's squadron -- I've seen it happen when wargamed out -- but he may have had one or more ships crippled in the bargain.

Cradock's main reason for leaving the Canopus behind was that its slow speed meant that Spee could merely run away, and this was a valid concern. Yet Brose makes the case that Spee would have attacked in any case, whether or not Canopus was in the line.

Later I'll look at Brose's take on the Battle of the Falklands, where he also makes a case for a closer-run affair than commonly believed.