https://transportational.com/tags/explainers/ Recent content in explainers on Transportational.com Hugo -- gohugo.io en-us Thu, 27 Aug 2026 00:00:00 +0000 https://transportational.com/why-it-takes-three-tugs-to-dock-a-366-meter-container-ship/ Thu, 27 Aug 2026 00:00:00 +0000 https://transportational.com/why-it-takes-three-tugs-to-dock-a-366-meter-container-ship/ A modern container ship arrives at the breakwater doing four or five knots and immediately becomes the least maneuverable object in the harbour. That’s the part people miss when they watch the process. The ship isn’t being helped along. It has effectively stopped being able to steer itself, and three small boats are now doing the job its 60,000-kilowatt main engine can’t. The reason is that a rudder is a wing. https://transportational.com/venice-runs-entirely-on-boats-inside-the-grand-canal-freight-system/ Sun, 09 Aug 2026 00:00:00 +0000 https://transportational.com/venice-runs-entirely-on-boats-inside-the-grand-canal-freight-system/ Every physical object in the historic centre of Venice arrived by hull. Bread, cement, hotel linen, restaurant deliveries, scaffolding, refuse going the other way, the coffin at a funeral. There is no road network behind the facade doing the real work. The canal in front of you is the road network, and the moored boats in this frame are the freight fleet at rest. The system has three legs. Goods reach the edge of the lagoon by road at Mestre and Marghera, transfer to flat-decked motor barges at the port or at Tronchetto, and then run into the city by water. https://transportational.com/why-a-teu-is-not-a-container-and-why-the-distinction-moves-numbers/ Sat, 08 Aug 2026 00:00:00 +0000 https://transportational.com/why-a-teu-is-not-a-container-and-why-the-distinction-moves-numbers/ A port announces it handled ten million TEU last year. The natural reading is that ten million boxes crossed the quay. They didn’t. The real number was probably closer to six million, and depending on the port, a large share of those boxes never entered the country at all. TEU stands for twenty-foot equivalent unit. It is a normalising unit, invented so that ports and carriers with mixed box lengths could compare capacity on one scale. https://transportational.com/why-many-livestock-carriers-started-life-as-car-carriers/ Mon, 20 Jul 2026 00:00:00 +0000 https://transportational.com/why-many-livestock-carriers-started-life-as-car-carriers/ Walk along almost any port that handles livestock exports and you’ll notice something odd: the ships look a lot like car carriers. Tall, boxy hulls. High freeboard. Almost no portholes. A silhouette built for stacking, not for passengers. That’s not a coincidence. A large share of the world’s livestock carrier fleet didn’t start out moving sheep and cattle at all — these vessels began life as Pure Car and Truck Carriers (PCTCs), the same ships used to ferry new vehicles across oceans. https://transportational.com/why-tanker-jetties-fire-their-water-cannons-inside-the-safety-systems-protecting-liquid-cargo-berths/ Sun, 08 Mar 2026 00:00:00 +0000 https://transportational.com/why-tanker-jetties-fire-their-water-cannons-inside-the-safety-systems-protecting-liquid-cargo-berths/ A tanker sits firmly alongside a liquid cargo jetty, tugs nearby in the basin, and a powerful arc of water sweeps across the ship’s bow. At first glance it almost looks theatrical, like a ceremonial water salute. In reality, what you are seeing is one of the most serious systems in tanker terminal operations being exercised: the fixed firefighting monitors that protect liquid cargo berths. Tanker jetties are among the highest-risk operational environments in commercial ports. https://transportational.com/what-tir-means-in-transportation-and-why-you-keep-seeing-it-on-trucks/ Fri, 30 Jan 2026 00:00:00 +0000 https://transportational.com/what-tir-means-in-transportation-and-why-you-keep-seeing-it-on-trucks/ TIR in transportation stands for Transports Internationaux Routiers, a French term that loosely translates to “International Road Transport,” and it refers to a global customs transit system designed to make cross-border trucking faster, simpler, and a lot less bureaucratic. When you see a truck with a blue TIR plate on the back, it means that the cargo is moving under an international guarantee system that allows it to pass through multiple countries without unloading or undergoing full customs inspections at every border, which is honestly a small miracle if you’ve ever watched a line of trucks crawl across a frontier. https://transportational.com/shipping-containers-the-quiet-geometry-of-global-trade/ Tue, 02 Dec 2025 00:00:00 +0000 https://transportational.com/shipping-containers-the-quiet-geometry-of-global-trade/ Funny how the world can obsess over AI chips, rare metals, or shiny electric cars, and meanwhile the most important objects in global commerce sit in plain sight—stacked like oversized Lego bricks in ports, rail yards, and ship decks across the planet. Shipping containers have no glamour, no sleek branding, no influencer campaigns. They look almost aggressively ordinary: corrugated steel walls, a number stenciled in flaking paint, maybe a rusted hinge or dented corner that hints at the storms and forklifts they’ve survived. https://transportational.com/powering-industry-the-precision-of-coal-discharging-at-ports/ Tue, 12 Nov 2024 00:00:00 +0000 https://transportational.com/powering-industry-the-precision-of-coal-discharging-at-ports/ At the heart of global industrial logistics lies the seamless coordination of bulk cargo operations. In this image, the cargo ship “IRAKLIS” exemplifies this intricate dance as it rests alongside the quay, poised for action. Its open cargo holds, partially veiled with protective tarps, hint at the valuable commodity within—most likely coal, a cornerstone of industrial and energy production. The dark interiors of the holds, visible even from a distance, signal readiness for unloading, a task carried out by the towering yellow cranes stationed nearby. https://transportational.com/can-u.s.-aircraft-carriers-navigate-the-suez-canal-regularly/ Fri, 28 Jun 2024 00:00:00 +0000 https://transportational.com/can-u.s.-aircraft-carriers-navigate-the-suez-canal-regularly/ U.S. aircraft carriers are capable of passing through the Suez Canal, but it is a challenging and infrequent maneuver. The Suez Canal, which connects the Mediterranean Sea to the Red Sea, is a vital waterway for international maritime trade, but its dimensions and operational conditions impose certain restrictions on large vessels like aircraft carriers. The Suez Canal has a minimum width of 205 meters (673 feet) and a depth of about 24 meters (79 feet) after its most recent expansions.