Sea freight transportation refers to the process in which heavy cargo is transported by sea vehicles from the POL (Port of Loading) to the POD (Port of Discharge). The process begins with the loading of goods onto the ship after completing the necessary procedures and ends when the cargo reaches its destination port and is delivered. Sea freight is widely used not only in domestic logistics but also in international transportation.
Although sea transportation is relatively slow, it offers many advantages in logistics. The most important of these is cost efficiency. Additionally, ensuring that goods are delivered from the sender to the receiver without damage is crucial. With sea freight, the risk of damage is minimized, making it easier to transport sensitive goods.
Another major advantage of maritime transport is its ability to carry large volumes of heavy and oversized cargo in a single shipment. Moreover, this type of logistics plays an important role in international trade, especially in crossing borders between countries.
Sea freight transportation includes two main methods: tramp (irregular) shipping and liner (regular) shipping. In tramp shipping, there is no fixed schedule or route; the ship departs when it is fully loaded, and freight rates are not fixed. In liner shipping, routes are predetermined, ships may depart before being fully loaded, and goods are transported in packaged and organized form. Upon arrival at the destination port, the cargo is delivered by the relevant carrier.
In sea freight transportation, cargo is categorized based on its type and the type of vessel used to transport it from the POL to the POD. There are four main types of ships: Ro-Ro ships, container ships, dry bulk ships, and tanker ships.
Ro-Ro ships are used to transport road vehicles by sea. They allow multiple wheeled vehicles to be transported at the same time and provide an economical transportation method. Ro-Ro ships are an example of liner shipping, where loading begins at a scheduled date and time at the port of departure. Since they carry large vehicles, their capacity is higher compared to other ships.
One of the most important advantages of Ro-Ro ships is that they eliminate customs issues that may arise when crossing multiple countries via land routes. This makes them a highly preferred transportation method. Vehicles transported via Ro-Ro ships are loaded and unloaded at specialized Ro-Ro ports. This method combines land and sea transport, where loaded vehicles are transported by ship and then delivered door-to-door once they reach the destination.
Container ships account for approximately 80–85% of sea freight transportation. Containers are units used to carry cargo, especially useful for keeping goods intact during transport. One of the biggest advantages is that containers are made from durable materials, ensuring that goods reach the destination without damage.
Large container ships are equipped with crane systems that allow efficient loading and arrangement of cargo. Due to their high capacity, they can transport many goods simultaneously, increasing the volume of shipments handled in a single trip. Container ships also offer flexibility in using different types of containers depending on the structure and volume of the goods.
Dry bulk ships are used to transport heavy and large-volume goods from one port to another. They are preferred because they can carry a wide variety of products across different industries. Proper packaging is essential to minimize damage risks during transport. The speed of dry bulk ships may vary depending on the weight of the cargo. Ro-Ro ships, bulk carriers, and container ships are often categorized under dry cargo vessels.
To answer the question “What is a tanker ship?”—these are vessels used to transport hazardous liquid and gas cargo. As the name suggests, tanker ships do not use containers; instead, they have specialized tanks. Cargo is loaded into these tanks using pumps at the loading port and discharged using similar systems at the destination.
These ships are designed with advanced systems to prevent leakage, allowing the safe transport of products such as oil, gasoline, gas, and chemicals. The largest tanker ships can carry significant volumes of hazardous liquid cargo in a single trip.
One of the key advantages of tanker ships is their relatively low accident risk compared to road transport. With proper precautions against leakage, they provide a safe and efficient transportation method for hazardous liquid materials. With Shipeedy, you can make complex logistics processes more predictable and manageable.