Nautical Science

  • How Are Containers Secured On Ships?

    How Are Containers Secured On Ships?

    When it comes to transporting goods, containers are a vital part of the process. But just how secure are they while in transit on ships at sea? On the open sea, ships face harsh conditions and are subject to extreme forces. If containers are not secured properly, rough weather can quickly become a recipe for…

  • Turning Circle Of Ship – Parts and Characteristics

    Turning Circle Of Ship – Parts and Characteristics

    The ship’s turning circle has it is own characteristics that influence maneuverability and must be taken into account. Maneuvering is the term used to describe the process by which a ship’s movement is controlled when in close proximity to other ships and objects at sea or as it approaches or exits a country’s coastal waters,…

  • What Is The Difference Between A Wave And A Swell?

    What Is The Difference Between A Wave And A Swell?

    Different factors affect a navigating vessel whether she is in port or the open sea. These include current, swell, wind, rain, snow, fog, etc. Waves are caused by either an earthquake, underwater volcanic eruptions, or wind. While swell is formed from a sustained wind strength and duration that builds up a large amount of energy…

  • What is Bridge Navigational Watch?

    What is Bridge Navigational Watch?

    The practice of ship navigation is essential for safe and efficient maritime transportation. It is a system that ensures that during the voyage, a vessel stays on course, avoids collisions, complies with international regulations, and minimizes fuel consumption while keeping to schedules. This is accomplished by a set of personnel on the ship’s navigation bridge…

  • Garbage Management On Ships: How To Protect The Ocean

    Garbage Management On Ships: How To Protect The Ocean

    Managing the garbage onboard is one of the most important operations as it can directly affect the environment as well as the health of the crew. Hence, it has become part of international regulations known as MARPOL Annex 5. Garbage management on ships is a system placed on board to organize and process all garbage…

  • Dangerous Goods Spillage on Ships: Onboard Emergency Response by IMDG Class

    Dangerous Goods Spillage on Ships: Onboard Emergency Response by IMDG Class

    A dangerous goods spillage is not a drill scenario — it is a shipboard emergency with regulatory, operational, and environmental consequences that begin the moment the spill is detected. The correct response depends on the IMDG class of the substance involved, and the correct reference document is not SOPEP. SOPEP covers oil pollution from machinery…

  • Hygroscopic vs Non-Hygroscopic Cargo: Risks, Examples & Protection at Sea

    Hygroscopic vs Non-Hygroscopic Cargo: Risks, Examples & Protection at Sea

    Moisture damage is one of the leading causes of cargo claims on bulk and break bulk vessels. Whether it comes from the cargo itself, from condensation on the ship’s structure, or from atmospheric humidity entering the hold, moisture affects different cargoes in fundamentally different ways — and the first thing a cargo officer needs to…

  • What Are The Types Of Chemical Tankers?

    What Are The Types Of Chemical Tankers?

    Chemical tankers play a vital role in moving chemical cargo which is normally in liquid form around the world. These vessels carry different types of chemicals that are stowed differently, so there are different types of chemical tankers. They are classified into three types as stated in the IBC (International Code for the Construction and…

  • What Is IMDG Dangerous Cargo Manifest?

    What Is IMDG Dangerous Cargo Manifest?

    Did you know that more than 50% of cargo transported by sea falls under the hazardous goods category? Dangerous goods exist in liquid, solid, or gaseous forms. They all pose a danger in different ways and extents. Thus, the International Maritime Standards exist to facilitate safety in handling cargo. The International Maritime Organization (IMO), formed…

  • What Is a Reefer Container? Technical Guide for Ship Officers

    What Is a Reefer Container? Technical Guide for Ship Officers

    A reefer container is an ISO-standard refrigerated shipping unit that maintains a controlled internal temperature throughout a sea voyage, rail transit, or port dwell. This article covers reefer technical specifications, cargo type requirements, USDA and EU phytosanitary compliance, vessel power supply systems, pre-trip inspection procedure, and how temperature excursions translate into cargo claims. It is…