John G. Kincaid: Greenock Marine Engine Builder

John G. Kincaid & Co Ltd was a marine engine builder at the East Hamilton Street works in Greenock, on the lower Firth of Clyde in Scotland. The firm started in 1868, and it spent its working life as a maker of engines rather than ships, supplying machinery to shipbuilders along the Clyde and beyond. Through the twentieth century it became one of the principal United Kingdom licensees of Burmeister & Wain, the Copenhagen diesel house, and it built large two-stroke crosshead diesels under that licence at Greenock. The records of the company and of its Clyde neighbours sit today in Scottish public archives, which is where the verifiable thread of the business now runs.

This article covers the corporate history, the licensing relationship that defined Kincaid’s middle decades, the way an independent engine builder fitted into Clyde shipbuilding, and the long contraction that ended British large-bore engine construction. It does not carry a companion calculator: it’s a historical narrative about a defunct maker, and the answer is the prose. Where a generic engine metric is genuinely discussed, an organic formula-card links out to the relevant tool.

Foundation in 1868 and the Greenock setting

Kincaid was established in 1868 in Greenock, a burgh on the south bank of the lower Clyde, downriver from the Glasgow shipyards and a shipbuilding and marine-engineering center in its own right. The town’s harbor frontage and its access to coal, iron, and skilled labor put it inside the densest concentration of merchant-ship construction in the world at that date. Greenock and the neighboring Port Glasgow accounted for a steady share of the river’s output, and an engine works on East Hamilton Street sat within a short cartage of several building berths.

The company’s early product was machinery for the iron and steel steamers that were displacing wooden sailing tonnage on the Clyde through the 1870s and 1880s. That meant compound and, later, triple-expansion reciprocating steam engines, with the boilers and auxiliary plant that went with them. A British triple-expansion engine of the period drove a single screw through three cylinders of rising bore, taking steam through high-, intermediate-, and low-pressure stages so the same charge did work three times before going to the condenser. Reciprocating steam stayed the standard prime mover for British cargo ships well past 1900, and Kincaid’s first half-century was built on it.

Greenock’s identity as a marine-engineering town is documented in the holdings of the Watt Institution and McLean Museum in the burgh, which keep local industrial and maritime material, and in the wider Scottish Business Archive at the University of Glasgow. The McLean Museum’s name itself nods to the engineering line of the lower Clyde. Those collections are the responsible places to ground claims about specific yards, launches, and engine deliveries, because the trade press of the era is patchy and many secondary accounts repeat each other without a primary check.

The town’s wider engineering pedigree gives the setting its weight. Greenock is where James Watt was born in 1736, and the burgh built its later industrial identity partly on that connection, with the Watt Institution named for him. By the time Kincaid opened its doors in 1868, the lower Clyde had decades of steam-engine and shipbuilding practice behind it, a labor pool that already knew castings, forgings, and fitting work, and a supply chain in coal and iron that fed the whole river. An engine works starting in that year was not a pioneer venture into an empty field; it was one more firm entering a trade the district already led. That distinction matters for reading the company’s early growth, which tracked the river’s rising output rather than any single technical breakthrough of its own.

Reciprocating steam, the first half-century

The product that carried Kincaid from 1868 to roughly the First World War was the reciprocating steam engine, and the dominant form by the 1880s was the triple-expansion type. A triple-expansion engine takes one charge of high-pressure steam and works it through three cylinders in turn: a small high-pressure cylinder first, then a larger intermediate-pressure cylinder, then a larger still low-pressure cylinder, before the spent steam goes to the condenser. Each stage drops the pressure and extracts more work, so the same steam does its job three times over. This is the layout that made the ocean-going cargo steamer economical, because it cut the coal bill per ton-mile far below what the older compound and simple engines could manage.

The economics of that engine drove a generation of British merchant shipping. Lower coal consumption meant smaller bunkers and more cargo deadweight on the same hull, longer range between coaling ports, and a lower running cost per voyage. For a firm like Kincaid the triple-expansion engine was a steady, repeatable product: the same general arrangement, scaled to the ship, fitted, and run on trials in the Firth before delivery. Boilers and auxiliary machinery, pumps, condensers, and feed systems, came as part of the same contract, so the engine works supplied a complete propulsion package rather than a bare engine. That breadth of work is one reason the independent engine builder remained viable for so long.

What an independent engine builder actually did

The Clyde ran on a division of labor that’s easy to miss now. A shipyard laid the keel, framed and plated the hull, and launched it; the engines, boilers, and shafting often came from a separate firm, sometimes on the same site under one company, sometimes from an independent works a mile away. Kincaid sat on the independent side for most of its history. It contracted to supply, install, and run the trials of a ship’s main machinery, while the hull was someone else’s work.

That arrangement gave owners and yards a choice of engine without each yard carrying its own engine shop. A builder short of engine-shop capacity, or one whose owner specified a particular engine type, could place the machinery contract outside. For an engine maker the model meant the customer was the shipbuilder or the shipowner rather than the end cargo, and the order book tracked the building river’s fortunes closely. When Clyde berths were full, the engine shops downriver were busy; when the berths emptied, the engine shops emptied a beat later.

The independent engine builder also carried specialized capital that a hull yard did not need to duplicate. Cylinder boring, crankshaft machining, the heavy lathes and planers for large components, and the test beds to run an engine before it went to sea were expensive plant that paid only if kept busy with engine work. Concentrating that plant in firms that did nothing else let the whole river share it. A yard could win a contract for a ship type it had never built and still deliver, because the engine came from a shop that built that engine routinely. The cost of the arrangement was coordination: the engine had to be ready when the hull was, and a slip on either side delayed delivery and tied up a berth.

There was a second consequence that bears on Kincaid’s later licence strategy. Because the engine builder sold to the shipowner’s specification as much as to the yard, the engine maker had to offer what owners wanted to buy. When owners began specifying diesel propulsion in place of steam, an engine works either followed that demand or lost the business to one that did. The licence route was the practical answer for a firm without its own diesel design: take the design that owners already trusted and build it locally. That is the path Kincaid took, and it explains why the company became a builder of someone else’s engine rather than a designer of its own.

The Burmeister & Wain licence

Kincaid’s defining commercial turn was the move from steam to the marine diesel, and specifically to Burmeister & Wain’s two-stroke designs. B&W of Copenhagen was one of the two houses, with Sulzer of Winterthur, that set the pattern for the large slow-speed marine engine in the first half of the twentieth century. The B&W story, including the firm’s diesel licensing program across Europe and Japan, is set out in the dedicated history of Burmeister & Wain. Rather than build a diesel engine to its own design, Kincaid took a licence and built B&W engines at Greenock, paying royalties and working to the licensor’s drawings and standards.

Licensing was how the slow-speed two-stroke spread. A handful of design houses held the intellectual property and the test-bed development, and a network of licensed builders made the engines locally, close to the shipyards that needed them. This kept a heavy, expensive engine from having to be shipped across borders, and it let national shipbuilding industries fit foreign-designed machinery without giving up the work. Kincaid was the Clyde end of that network for B&W, in the same role that other licensees filled elsewhere in Britain. The lineage from B&W through later consolidation now runs into MAN Energy Solutions, which holds the two-stroke design line that B&W’s marine business became.

The terms of a marine engine licence shaped how the licensee worked day to day. The licensor supplied the drawings, the material specifications, the clearances and tolerances, and the build and test procedures, and it kept developing the engine on its own test beds while the licensees built to the current revision. The licensee held the foundry, machine shop, fitting shop, and test bed, hired and trained the trades, and certified each engine to the licensor’s standard, usually under the eye of a classification society. Royalties were paid per engine or per unit of power, so the licence was a recurring cost tied to output, not a one-time purchase. This split let a small design community concentrate research while a wide builder community kept production close to the shipyards.

For the customer the appeal was uniformity. A B&W engine built at Greenock was meant to be the same engine as a B&W built in Copenhagen or under licence in Japan, with interchangeable parts, common spare-gear lists, and a single body of operating and overhaul guidance. A shipowner running a mixed fleet could carry one set of stores and train engineers on one engine family, whoever had built the individual unit. That standardization is a large part of why the licensed slow-speed two-stroke beat back original national designs over time: the network effect of a single widely built engine outweighed the engineering merits of a one-off. It is also why the design line could survive corporate consolidation. The engine outlived the firm that first drew it because too much of the world’s fleet depended on it to let it lapse.

Two-stroke crosshead architecture

The engines Kincaid built to B&W licence were two-stroke crosshead diesels, the family that still drives most large merchant ships. The fundamentals of that cycle are covered in two-stroke marine diesel engine and the broader marine diesel engine article. A two-stroke fires once per crankshaft revolution rather than once every two, so for a given size and speed it makes more power strokes than a four-stroke. The trade is that scavenging, the job of pushing burned gas out and fresh air in, has to happen around bottom dead center rather than over a separate exhaust and intake stroke.

The crosshead layout is what sets these engines apart from the trunk-piston engines in trucks and gensets. A crosshead engine puts a sliding crosshead between the piston rod and the connecting rod, so the piston rod stays in line with the cylinder and the side thrust from the angled connecting rod is taken by the crosshead guides instead of by the piston skirt. The crosshead diesel engine architecture keeps the combustion space and its cylinder lubrication separate from the crankcase, which is what lets these engines burn heavy residual fuel for tens of thousands of hours between major overhauls. A diaphragm and stuffing box at the bottom of the cylinder keep combustion-side contamination out of the crankcase oil.

The B&W two-strokes of the licence era used uniflow or loop scavenging depending on the series, with the air entering low through ports uncovered by the piston and the exhaust leaving either through a top valve or through ports on the opposite side. Bore sizes for medium and larger cargo-ship engines ran into the hundreds of millimeters, with the largest powerplants of the line reaching well above that. The exact type designations and ratings for any given Kincaid-built engine belong to the ship’s own records and to the engine builder’s order book, both of which are archival matters rather than things to assert from memory.

Scavenging is the hard part of any two-stroke, and it’s where the slow-speed marine engine put most of its development effort. With no separate intake and exhaust strokes, the engine has only the short window around bottom dead center to clear the burned gas and fill the cylinder with fresh air. Loop scavenging routes the incoming air up one side and loops it over to drive the exhaust out ports on the same side as the piston rises; uniflow scavenging sends air in at the bottom and exhaust out the top through a valve, so the gas flows one direction through the cylinder. Uniflow gives cleaner separation of fresh and burned gas at the cost of a cylinder-head exhaust valve, and it became the dominant arrangement on the largest engines. Either way, the air has to be delivered under pressure, which is the turbocharger’s job.

Turbocharging is what let the slow-speed two-stroke grow its output without growing its size in step. An exhaust-driven turbocharger uses the energy left in the exhaust gas to compress the scavenge air, pushing more oxygen into the cylinder so more fuel can be burned per stroke. Higher charge pressure raises the mean effective pressure the engine can carry, which raises power for the same swept volume. The charge air is cooled after compression, because cooling it raises its density and packs still more oxygen into the cylinder, and because it limits the thermal load on the components. The interplay of scavenging, turbocharging, and charge-air cooling is the reason the same basic engine layout kept gaining power and efficiency across the licence decades.

Heavy fuel operation is the other defining trait, and it ties back to the crosshead layout. Residual fuel oil is cheap, viscous, and dirty, carrying sulfur, ash, and abrasive particles that a trunk-piston engine’s shared lubrication could not tolerate for long. The crosshead engine separates the cylinder, with its own once-through cylinder oil dosed to neutralize fuel acids, from the crankcase, with its own circulating system oil. That separation is what makes burning residual fuel for tens of thousands of running hours practical, and it’s a structural reason the type held deep-sea propulsion against the lighter, faster medium-speed engines. The cylinder oil is consumed and the system oil is conserved, two jobs done by two oils that never mix.

Where the engines went

An engine works on the lower Clyde sold first to its neighbors. Greenock and Port Glasgow carried several substantial shipbuilders through the twentieth century, and machinery contracts moved between the yards and the engine shops as capacity and owner preference dictated. The strongest documented thread is the long association between the Greenock engineering and shipbuilding firms, where engine supply and hull construction sat side by side on the same river. The most useful single statement that can be made with confidence is that Kincaid’s customers were the building yards of the Clyde and the owners who built there, and that its output rode the same demand curve as the river’s launches.

Beyond the immediate neighborhood, British merchant building before the long decline served a worldwide order book, with British and foreign owners alike placing tonnage on the Clyde. An engine builder feeding that work therefore put its machinery into ships that traded under many flags. Naming specific owners and specific hulls is exactly the kind of claim that should be checked against the surviving order books and class records before it goes into print, and the National Records of Scotland business-records guide and the Glasgow business archive are the places that check is done.

Scotts of Greenock and the Clyde yards

The shipbuilding context around Kincaid centers on Scotts’ Shipbuilding & Engineering Company of Greenock, one of the oldest shipbuilding names anywhere, with roots in the early eighteenth century. Scotts built ships and, through its own engineering arm, built engines too, which means the relationship between the two Greenock firms was at times that of neighbors in the same trade rather than a simple yard-and-engine-shop pairing. The other lower-Clyde builders, among them the Port Glasgow yards, made up the rest of the local market for marine machinery.

The point worth holding onto is structural. Greenock packed shipbuilding berths, engine shops, boiler shops, and the supporting trades into a few square miles, and the firms in that cluster bought from and sold to each other. A complete account of Kincaid’s deliveries can’t be separated from the parallel histories of Scotts and the other yards, because the order book of one is the customer list of another. That interdependence is also what made the cluster fragile: when the orders stopped coming to the river, every firm in the chain felt it at once.

Scotts itself is one of the longest-running shipbuilding names in the world, with origins on the lower Clyde reaching back to the early eighteenth century, well before Kincaid existed. Through its engineering arm it built marine machinery as well as hulls, so on some contracts it was a competitor to the independent engine works and on others a partner that bought in. The presence of an in-house engine capability at one of the town’s largest builders is part of why Greenock’s machinery market was dense and the firms’ fortunes entangled. A proper study of how Kincaid and Scotts divided the engine work between them, and how that division shifted across the steam-to-diesel transition, would draw on both firms’ surviving records and would be worth its own treatment. The relationship of the Greenock engine builders to Scotts deserves a dedicated reference node and does not yet have one.

The slow-speed engine in service

A slow-speed two-stroke of the kind Kincaid built turns at the propeller’s own speed, on the order of one to two revolutions per second, and couples straight to the shaft without reduction gearing. That direct drive, the ability to run on heavy fuel, and a long time between overhauls are why the type took over deep-sea propulsion and has kept it. The efficiency case is the other half of the story.

A useful single measure of how hard a cylinder is worked is brake mean effective pressure, the average pressure that, acting on the piston through one power stroke, would produce the engine’s measured brake power. It lets engines of different size and speed be compared on the load each cylinder carries.

The fuel side of the comparison is specific fuel oil consumption, the mass of fuel burned per unit of work delivered, usually quoted in grams per kilowatt-hour. The large slow-speed two-stroke holds the best SFOC of any production reciprocating engine, and brake thermal efficiency follows directly from it once the fuel’s heating value is known. Lower SFOC means a larger share of the fuel’s chemical energy leaves as shaft work rather than as heat in the exhaust and cooling water.

SFOC is not a fixed number for a given engine; it shifts with load, with the condition of the turbocharging and scavenging, and with the temperature of the charge air the engine breathes. Cooler, denser intake air packs more oxygen into the cylinder for the same volume, which is why charge-air coolers matter to fuel economy as well as to mechanical loading.

The relationship between ship speed and fuel burn is the economic backdrop to all of this. Propulsion power rises roughly with the cube of speed through the water, so a small cut in speed buys a large cut in fuel. That cube law is why slow steaming became standard practice when bunker prices climbed, and it shaped the way owners specified and ran the engines that Kincaid and its peers built.

None of these relationships is specific to Kincaid; they describe the class of engine the company built under licence, and they’re the same relationships that govern the engines built by every other licensee and design house of the era. The figures for any individual Kincaid engine, its rated power, its quoted SFOC, its bore and stroke, are properties of that engine type and should be read from the maker’s data or the ship’s records rather than assumed.

The four relationships also fit together in service, which is how an engineer would actually use them. BMEP fixes how hard each cylinder works at a given rating, and it sets the mechanical and thermal load the components must carry. SFOC fixes how efficiently that work is bought in fuel, and brake thermal efficiency falls straight out of it once the fuel’s heating value is known. The charge-air temperature term shows why the coolers are part of the fuel economy, not just the cooling system: warmer intake air costs efficiency and capacity. And the cube law sets the strategy, because it tells the operator that easing the speed buys a large fuel saving for a small loss of time. A slow-speed two-stroke is specified against the first two relationships and operated against the last two.

That operating picture is why owners cared which engine went into a hull. A direct-coupled slow-speed engine running on residual fuel at the propeller’s own speed was the cheapest way to move cargo across an ocean, and the SFOC of the best two-strokes set the benchmark every other propulsion option was measured against. The companion engine-model tools on this site, including the marine engine model decoder, exist to read the type designations that encode an engine’s bore, configuration, and series, which is the first step in pulling its rated data from the maker’s documentation. For a Kincaid-built engine that means decoding the B&W designation, then going to the licensor’s data for the numbers.

British large-bore builders and the wider field

Kincaid was one of several British firms that built large marine diesels in the twentieth century, and it’s best understood next to them. Two stand out. The first is the diesel works at Harland & Wolff in Belfast, which, like Kincaid, built B&W engines under licence and became a major British outlet for the Copenhagen designs. The second is the engine that didn’t come from a licence at all: the Doxford opposed-piston engine, a British two-stroke of original design built at Sunderland, which competed against the licensed B&W and Sulzer engines on its own terms.

The contrast is instructive. Doxford carried the cost and the risk of developing its own engine; Kincaid and Harland & Wolff took the proven B&W design and built it to the licensor’s standard. Both models worked while the order book held, and both depended on a building industry that was still placing large volumes of tonnage in British yards. The broader roll of engine builders, licensors and licensees alike, is collected in the marine engine makers overview, which sets Kincaid in the company of the firms it built alongside and against. On the licence side specifically, the rival Swiss line ran through Sulzer, whose loop-scavenged two-strokes were the main alternative to B&W in the same decades.

The licence-versus-original-design question decided which firms survived the long contraction. Developing a marine engine from scratch was expensive and slow, and it only paid back over a long production run. Doxford could spread that cost while British yards bought British engines in volume; once the volume fell, the development burden had no base to rest on, and the original design line could not be sustained. A licensee carried no comparable research cost, so on paper it should have been more resilient. In practice the licensee was just as exposed, because its customers were the same shrinking pool of British yards, and its product had no advantage over the same B&W engine built by any other licensee closer to a busier shipbuilding industry. When the orders moved to Japan and Korea, the engine work moved with them to the licensees in those countries, and the British licensees lost their reason to exist alongside the British yards they had served.

There is a wider field of national engine builders that fills out the picture, and the patterns repeat across countries. German builders such as those in the Krupp lineage, Japanese firms in the line that became Mitsui E&S, and smaller specialist makers like Atlas-Polar each occupied a slot defined by their home shipbuilding industry and by which design house they licensed or competed against. The Swedish yard and engine builder Kockums is another point of comparison from a different national industry. Reading Kincaid against these firms shows the structure clearly: an engine builder’s fate was set less by its own engineering than by the health of the shipbuilding cluster it fed and by the licence network it sat inside.

Decline of Clyde shipbuilding and the end of engine building

The British marine engine builders followed British shipbuilding down, because their order books were the same order book. The contraction ran from the 1960s through the 1980s, as Japanese and then Korean yards took the world’s merchant building on price, scale, and delivery time, and the British industry’s share fell year on year. The detail of any one closure date belongs to that firm’s records, but the direction is not in dispute: the cluster that had built a large fraction of the world’s ships before 1914 had shrunk to a fraction of its former self by the 1980s.

Doxford stopped building its own engine when the British two-stroke development line ran out of orders to justify it. The licensed builders lost their customers as the yards they fed closed or stopped placing diesel contracts. Greenock’s engine building wound down inside that same collapse, ending more than a century of marine engine construction on the lower Clyde. The dates and the precise sequence for Kincaid are matters for the surviving company and archive records, which is where a careful account would fix them rather than rely on repeated secondary claims.

The structural cause was the same for every firm in the chain. A licensed engine works has no product without a shipyard to put the engine in, and a Clyde shipyard had no future once the world’s owners could order a complete ship more cheaply elsewhere. The interdependence that made the river productive in its prime made the decline general once it started. The surviving British marine-engineering capability after the closures sat in component manufacture, in licensed parts, and in service and overhaul work, rather than in building complete slow-speed engines from the ground up.

The shift to East Asian building was not a matter of one firm being outcompeted by another; it was a relocation of an entire industry. Japanese yards built scale and standardization through the 1960s and 1970s and took the bulk of world merchant orders on price and delivery, and Korean yards repeated the move on a larger scale from the late 1970s onward. The slow-speed engines those ships needed were built under the same B&W and Sulzer licences, now held by builders in Japan and Korea who sat next to the busiest shipyards on earth. The licence network that had once put engine work on the Clyde now put it in Asia, because that is where the hulls were. A British licensee could match the engine but not the order book.

Government policy moved alongside the market. British shipbuilding was reorganized and nationalized in the 1970s, then restructured and reduced through the 1980s as the order book kept shrinking. The detail of how those changes touched any individual engine builder is a matter for the firm’s own records, but the environment is clear: a long, managed contraction of an industry that the home market could no longer support at its former scale. Engine building on the lower Clyde ended within that contraction, closing a line of marine engine manufacture in Greenock that ran from 1868 across more than a century. The precise closing date for the firm belongs to the surviving company and registration records held in the Scottish archives, which is where a careful account would fix it.

Greenock’s marine-engineering legacy

What remains of Kincaid and its neighbors is mostly documentary. The Watt Institution and McLean Museum in Greenock holds local industrial and maritime material; the Scottish Maritime Museum keeps Clyde-built artifacts and machinery; the University of Glasgow’s Scottish Business Archive holds business records from the shipbuilding and engineering firms of the west of Scotland; and the National Records of Scotland is the route into surviving company registrations and papers. Between them, those institutions are where the real history of the firm is preserved and where it can be checked.

The physical site followed the pattern of post-industrial Greenock. The waterfront that once carried building berths and engine shops has been reworked over the decades for other uses, and little of the original works survives as standing fabric. The lower Clyde keeps a working maritime role through cruise calls and cargo handling, but the dense engineering cluster of the town’s industrial peak is now a matter of record rather than of active production. Greenock’s standing as a marine-engineering center is real history, attested in the public collections, and the most accurate thing that can be said is that the engineering identity now lives in the archives that hold it.

The engines themselves outlast the firm by decades, because a well-maintained slow-speed two-stroke runs for the life of the ship and often into a second owner’s hands. A B&W engine built under licence at Greenock could plausibly stay at sea long after the works that made it had closed, kept running on the licensor’s spare-gear lists and overhaul guidance by engineers who never set foot in Scotland. That is the practical legacy of the standardization the licence system bought: the engine is a member of a family, serviceable anywhere the family is known, regardless of which licensee stamped it. Tracing any specific surviving Kincaid-built engine is again an archival and ship-records task, not something to assert in the abstract.

Researching Kincaid in the archives

Anyone wanting to go past the outline here has a defined set of doors to knock on. The National Records of Scotland holds company registrations and surviving business papers and publishes a research guide for business records, which is the route into a firm’s legal existence and corporate changes. The University of Glasgow’s Scottish Business Archive is the largest single repository of west-of-Scotland shipbuilding and engineering records, and it is the place to look for order books, drawings, and correspondence where they survive. The Watt Institution and McLean Museum in Greenock holds local material specific to the burgh and its industries. The Scottish Maritime Museum keeps Clyde-built artifacts and machinery and the documentary collections that go with them. Between these four, a researcher can establish what was built, for whom, and when, with primary evidence rather than repeated secondary claims.

The reason for the caution runs through this whole article. Much of what circulates about defunct British engine builders comes from secondary sources that copy each other, and specific dates, licence terms, engine designations, and owner lists often trace back to a single unverified assertion. The archives above are where those claims either hold up or fall down. For a maker that left the active record decades ago, the honest position is to state the well-attested structure of the business and to point firmly at the primary sources for the detail, which is what this article does.

Limitations

This article is a historical narrative, and several common claims about Kincaid carry more specificity than primary public sources readily support. Founding in 1868 and the Greenock location are well attested. The Burmeister & Wain licence relationship and the two-stroke crosshead product line are consistent with the documented pattern of British B&W licensees, but the exact licence dates, the specific engine type designations built at Greenock, and the named owners and hulls of individual deliveries should be taken from the company’s order books and from class and ship records, not from this summary. The same caution applies to any single closure date and to claims of a second engine licence: secondary accounts repeat figures that have not always been checked against the primary record.

No power, fuel-consumption, bore, or stroke figures for specific Kincaid engines are stated here, because asserting them without the maker’s data would be invention. The formula-cards above describe the class of slow-speed two-stroke engine that Kincaid built under licence; they’re general relationships, not measurements of any particular Kincaid powerplant. Readers needing engine-specific data should consult the original maker’s documentation and the relevant classification-society records.

See also

• Burmeister & Wain history
• MAN Energy Solutions corporate history
• Harland and Wolff diesel engines
• Doxford opposed-piston engines
• Sulzer marine diesel engines history
• Two-stroke marine diesel engine fundamentals
• Crosshead diesel engine architecture overview
• Marine diesel engine
• Marine engine makers
• Marine Engine Model Decoder