Tag Archives: dead ends

Confederate Aft End Was a Dead End

The following is part of Dead Ends Week at CIMSEC, where we pick apart past experiments and initiatives in the hopes of learning something from those that just didn’t quite pan out. See the rest of the posts here

Looking for whalers - CSS Shenandoah under sail
Looking for whalers – CSS Shenandoah under sail

The history of the American Civil War has very little to say on the Confederate Navy. What it does say focuses on commerce raiding, mostly by the CSS Alabama, which is well-known enough to be in high school history texts. But others were out there, too, such as the CSS Shenandoah.

Shenandoah was most notable for raiding whalers in the Pacific for months after the war was over (the news travelled to them slowly), and its flag was thus the last to fly in the Confederacy’s name. But for our purposes here the ship’s propulsion, not its politics, are our concern.

As was common in the mid-19th century, Shenandoah had a hybrid sail/steam system. When winds were good, the crew hauled up sails, and when the wind ceased, they lit off the boiler. What made this ship unique was a retractable propeller that (theoretically, anyway) reduced drag and increased the ship’s speed while under sail.

CSS Shenandoah drydocked
CSS Shenandoah drydocked

Did it work any more effectively than opening (or was it closing?) the tailgate on a pickup truck helps fuel efficiency? Apparently sailors of the time thought it did. Whatever the answer, it soon became a moot point as sails disappeared entirely from merchant and military fleets around the world. The retractable propeller truly was a dead-end technology, designed to address what turned out to be only a transient problem. As other technologies and procedures developed, the propeller “hoist” became a solution without a problem to solve.

A note on sourcing: While I did find online references to the propeller hoist, this post is mostly based on my memory of “Last Flag Down,” an account of Shenandoah’s cruise by John Baldwin and Ron Powers – a book I cannot recommend highly enough. For a short description of the voyage, see the family history of the XO, Lt. Conway Whittle (near the bottom of the page).

Matt McLaughlin is a Navy Reserve lieutenant who never quite figured out the tailgate thing and ended up selling his pickup. His opinions do not represent the Department of the Navy, Department of Defense or his employer.

These Dead Ends Go To Eleven

The following is part of Dead Ends Week at CIMSEC, where we pick apart past experiments and initiatives in the hopes of learning something from those that just didn’t quite pan out. See the rest of the posts here

Dead ends aren’t always failures of the innovation. Sometimes good ideas are drowned by bureaucracies. In the 1994 paper “The Politics of Naval Innovation” released through the Center for Naval Warfare Studies at the Naval War College, contributor Jeffery Sands states that military organizations are large, conservative, and hierarchical. Resistance exists because: 1) the free flow of information is restricted in hierarchical organizations; 2) leaders have no interest in encouraging their own obsolescence by introducing innovations; and 3) organizations such as the Navy, which are infrastructure-intensive and where changes to that infrastructure are both expensive and lengthy, need some modicum of stability.

The failure of leadership to innovate can be found through two nameless British dockyard models from the Henry Huddleston Rogers Collection at the United States Naval Academy Museum, which has the second largest collection of dockyard models outside of the National Maritime Museum in Greenwich, England.

Waiting for an outboard motor...
Waiting for an outboard motor…

The model pictured at right is a Royal Navy Board hull model of a three-masted, 24-gun Sixth Rate with a pinched (or “pink”) stern, a design not seen in any other known age-of-sail model. The sterns of most English rated warships of the 17th and 18th centuries were burdened by heavy, overhanging square sterns and quarter galleries attached to the hull only at the ends and supported by a series of horizontal transoms. This made the ship difficult to maneuver, particularly in following seas, much like a small car towing a U-Haul in windy conditions. The stern was, of course, where the cabins were located for the captain and, in larger ships of the line, an admiral.

The pinched stern arrangement transferred the weight of the stern on vertical timbers that were taken down to the keel.  That made the stern much sturdier. The designer proposed this innovative ship to improve the ship’s maneuverability, survivability, and speed advantages in a fight. The design would, however, have eliminated the precious cabin space for the senior officers. Although two pink stern hulls were eventually built, the Admiralty demonstrated its resistance to this innovative design simply because of the loss of their comfort and cabin space.

“But there’s no room for the pool table!”
“But there’s no room for the pool table!”

HRR Model No. 14

In the 1984 mock rockumenatory “This is Spinal Tap,” lead guitarist (portrayed by Christopher Guest) explains to the interviewer that his amps “go to eleven” because they’re “one louder.” The interviewer asks him why he doesn’t just adjust the amps so that “ten” is louder. The perplexed Tufnel pauses for a moment and then simply reiterates: “These go to eleven.” The similar befuddled intransigence to a naval modification is exhibited in HRR Model No. 14, an English Fifth Rate 32-Gun ship.

The ship was proposed in 1689 or 1690. British ships of that period fell into one of three classes: ships-of-the-line generally with three decks of guns, frigates with two gun decks, and smaller ships with one gun deck. Model No. 14 is the grandfather of what became the true British frigates in the late 18th century.

Lurking in there somewhere is a second gundeck…
Lurking in there somewhere is a second gundeck…

Arthur Herbert, Earl of Torrington (incidentally the first person to use the term “fleet in being”), was a battle-scarred veteran of the Dutch Wars and realized that the Royal Navy needed large numbers of a new kind of robust and maneuverable cruiser capable of remaining at sea for long periods of time. To be truly effective, they should be able to employ their main battery of guns even in regions of rougher weather since heavy guns on the lower deck were normally too near the waterline to be used in battle except in optimal weather conditions. The original concept was that the lower deck was to be left completely unarmed without any gunports. The Admiralty board balked.  The debate likely went something like this:

Torrington: “We’ve improved the design by having the guns on the upper deck.”

Admiralty: “But a frigate has two gundecks.”

Torrington: “Yes, but by having all the guns on the upperdeck she has better seakeeping.”

Admiralty: “But a frigate has two gundecks.”

(Fast forward as Torrington modifies the dockyard model to add one small gunport on each side of the stern pictured below.)

Torrington: “Here’s your second gundeck.”

Admiralty: “Ah, a frigate has two gundecks!  Well done!”

Yep, there it is.
Yep, there it is.

This evolution became symptomatic of the British for the next century to build light originally but then modify the ships with more guns than for which they were originally designed. Ultimately it would be another century before the Admiralty adopted a frigate that had a seven-foot freeboard as the standard.

Claude Berube is the Director of the Naval Academy Museum and instructor in the Department of History. He is the author of several books and more than forty articles. The author notes the extensive research on the dockyard models done by specialist Grant Walker at the Naval Academy Museum.

Landing Gear is for Pansies

The following is part of Dead Ends Week at CIMSEC, where we pick apart past experiments and initiatives in the hopes of learning something from those that just didn’t quite pan out. See the rest of the posts here

Despite (or possibly, because of) Washington Naval Treaty cutbacks in the 20s and the Depression-induced budget troubles in the 30s, the U.S. Navy experienced quite a period of experimentation during the interwar decades. Without a doubt, the most glamorous example was the airship program, which featured yet another ship called Shenandoah, and culminated in the rigid airships USS Akron and USS Macon (ZRS-4 and ZRS-5).

Imagine riding this up to Fleet Week.
Imagine riding this up to Fleet Week.

But we are not here to talk about those, strictly speaking – we’re here to discuss their parasites. Parasite aircraft, that is. Akron and Macon were flying aircraft carriers, each carrying three or four scout aircraft to serve as the long-range eyes of the fleet below.

The Curtiss F9C Sparrowhawk originated in a 1930 Navy requirement for a small carrier-based fighter. It ended up not performing too well in that role, but was retained in service as the only aircraft small enough to fit through the hanger doors of Akron, then under construction.

Here’s the dead end – the truly daring, truly paradigm-shifting dead end. How many planes have you ridden in that possessed some form of landing gear? I trust that it was every single one. So what do you do with a plane that takes off and “lands” via a hook above the fuselage? If you’re the Navy in the 1930s, you ditch the landing gear. No fixed gear, no retractable gear – simply no wheels at all. The Goodyear company would have been very fearful at the lost business, if they weren’t also the ones building the giant ships carrying the tire-less biplanes. All in all, probably a good deal for them.

Hooking into the trapeze aboard the Macon… the parallel parking of the skies.
Hooking into the trapeze aboard the Macon… the parallel parking of the skies.

But aircraft that never kissed ground were not long for this Earth. The Navy’s lighter-than-air fleet followed the general trend of rigid airships, in which they died violent deaths. Akron went down in a storm in the Atlantic (killing Rear Admiral William A. Moffett) in 1933, and Macon went down in the Pacific while operating out of Moffett Field just two years later. Sparrowhawks lost their niche and paradigms were brought back to normal.

Still, it is worth pondering the lesson of the Sparrowhawk. It took something that every single aircraft must have in some form or another, and just did away with it when the need disappeared. It didn’t end up working out – but it deserves to be admired.

Matt McLaughlin is a Navy Reserve lieutenant who doesn’t usually discuss parasites as frankly as he does here. His opinions do not represent the Department of the Navy, Department of Defense or his employer.

Circular Hulls: Dead Ends that Sound Awesome

The following is part of Dead Ends Week at CIMSEC, where we pick apart past experiments and initiatives in the hopes of learning something from those that just didn’t quite pan out. See the rest of the posts here.

By Mark Hay

Where have we seen a similar map lately?
Where have we seen a similar map lately?

Throughout the 1860s, the Russian navy felt lost and more than a smidgen inadequate. The recent Peace of Paris in 1856, after their trouncing in the Crimean War, had banished Russian warships from the Black Sea, making much of the nation’s naval strategy obsolete and leaving Russia open to bellicosity from its southern neighbors in the Ottoman Empire. Meanwhile, the rise of monitors, first in America but then closer to home in Sweden, gave a shape to the fear that Russian technology was falling too far behind the curve to handle any future naval engagements. The Russian navy needed raw firepower, something so innovative in its brutality and strength that it could sit at the mouths of Russia’s rivers and utterly destroy any foreign notions of picking away at Russia via internal waterways.

The man with the plan.
The man with the plan

Fortunately, the Czar had a man with a plan. Andrei Alexandrovich Popov, the newly minted rear admiral in charge of dry docks and ship design, had served in the Crimean War and knew well the existential fear his nation faced. In his search for answers, he became obsessed with a design being floated by the Glaswegian shipbuilder John Elder: circles. Circles would solve everything. Circular hulls, that is. In a fit of simple, geometric brilliance, Elder had pointed out—and Popov had readily internalized the fact—that a shallow, circular ship design would offer the greatest level of displacement on the water, allowing for the highest ratio of gun weight to ship area. As a bonus, the ship’s rounded edges would expose only slivers of the hull to direct fire at any point, deflecting the brunt of a shell’s impact and requiring minimal armor. Sitting low in the water, not much would be exposed anyway, so the small target’s large guns could rotate with ease in any direction and launch intimidating salvos from the Kerch Strait of the Dnieper River, mutilating any Turkish incursion into Russian waters. Popov ordered the construction of ten perfectly round ships, plated in metal armor and based on Swedish monitor designs, to create a solid blockade. In the end the ailing Russian treasury was only able to fund two: the Novgorod and the eponymous Admiral Popov. Commissioned in 1871 and launched in 1873, the two ships bore some subtle differences, but for the most part they shared the same design: 2,491 tons when empty, 30.8 meters in diameter, a 3.7 meter draught and 7-knot best speed, and a ring of armor 12 to 16 centimeters thick. Each sported two 26-ton 11-inch guns on revolving turntables, capable of moving independently or in unison, using wood wedges and hydraulic frictional compression devices to stabilize their fire. Aside from the big guns, each ship carried two 4-pound and sixteen 37 mm guns. Each ship ran on the power of six engines, each connected to its own propeller shaft—the engines and boiler took up half of the hull of the ships. They were truly imposing monstrosities.

We’d be remiss if we failed to make a UFO joke – Unidentified Floating Object
We’d be remiss if we failed to make a UFO joke – Unidentified Floating Object

Unfortunately they were green-lit with almost no testing. Popov offered a 24-foot model for inspection in the placid Neva River in 1870, but did not test the propulsion or gunnery on the toy ship. His sole intention was, single-mindedly, to demonstrate the visual allure, displacement potential, and novelty of the round hull.

The problem with a circle, though, is when one fires a shot with a massive gun, there’s something called centrifugal rotation. With no keel to cut and hold water, the lore goes, the first shots fired by the ships—nicknamed popovas after their inventor—sent them careening off wildly down the river. This dim view is overstated. While the first gunnery test revealed what should be deemed—at minimum—severe problems, coordination with the rudder and contra-rotation of the propellers helped to stop the ships from spinning off like tops in the field. However, the underlying problems of mobility could not be overcome. The rudder and propeller were undersized compared to the task of handling the unmoored disc, which rolled and pitched about in the waves of any river choppier than the Neva.

The result was poor aim, a 12-minute reload time, and a top speed less than half of that predicted by Popov and his acolytes. Not to mention that the designers had thought little of the crew, boiling in the poorly ventilated hull in the midst of brutal Ukrainian summers. Not even the compensations for the spin of the guns could salvage the round ship design.

The monitor Novgorod, in happier days
The monitor Novgorod, in happier days

Eventually the Peace of Paris lapsed and the Russian fleet moved back into the Black Sea, taking the fight on the offensive. In the next confrontation with the Turks, the popovas were taken to shore and anchored taut to prevent their spinning off. With too little endurance to make the trip across the waters to plot and fire at Turkey, they became defensive batteries never used in the conflict. After their failed service in the Danube Flotilla during the Russo-Turkish War of 1877-8, they were put into storage in 1893 and finally scrapped in 1912.

None of this was inevitable, nor was it the fault of the round ship design inherently. Even with news of the follies and failures of the popovas, British shipwrights continued to extoll the virtues of the round ship in naval conferences well into the 1870s, drawing lessons from Russia on how to overcome the mobility and stability issues of the shape. Popov and John Elder’s company (he died in 1869) even collaborated in 1879 to build the Czar’s new yacht, the Livadia, on the round ship design, elongating the stern and bow to help break the rotation of the ship, elegantly eliminating almost every flaw of the popovas.

The problem of the popovas was Popov and his obsession with a magic bullet solution to every problem of the Russian navy. His incessant belief in the power of fluid geometry (even after his brainchildren’s spectacular failure, he suggested building a larger ship with 16-inch guns that could reach 14 knots, but scrapped the idea when he realized he’d need five times normal horsepower to make it move) led him to ignore basic physics and easily intuited complications. And perhaps the design would have worked, if the money for ten had existed and the strategic importance of the Kerch Strait remained a constant for several decades. But the world is not ideal, strategic factors change, and while a circular peg may fit a circular hole, there are almost no such simple geometric equations to be filled in peace or war. 

Mark Hay is a freelance writer and University of Oxford graduate student who works on political, material and strategic history.