Showing posts with label shipping. Show all posts
Showing posts with label shipping. Show all posts

November 4, 2020

Deadweight Tonnage (DWT)


What is Deadweight Tonnage?

The word ‘ton’ in shipping can denote both weight and capacity. Loaded displacement tonnage is the actual weight of the ship and cargo. Light displacement tonnage is the actual weight of the ship. The difference between the loaded displacement and the light displacement is the weight that the ship can actually carry and is known as the Deadweight Tonnage (DWT).

October 29, 2020

Bale Capacity and Grain Capacity - what is the difference?


Ship bale and grain capacity measurements are provided by shipyards for dry cargo ships. Ship bale and grain capacities are used for measuring cargo space availability for bulk or non-bulk cargoes. 

Ship bale and grain capacity measurements show the actual volumes available for cargo in numbers. Grain capacity is the space that is available for liquid-type cargo, like bulk grain, which can flow into every corner. Bale capacity is the space that is available for bagged or baled cargoes. Generally, a ship’s bale capacity is about 7–10% less than grain capacity. 

October 21, 2020

Arrived ship

The Laytime

It is clearly important to determine when laytime commences since this is the key to the division of responsibility for the time spent at the load and/or discharge port. Most charterparties require the owners to serve a notice of readiness at load or discharge port stating that the vessel is ready in all respects for cargo operations, the notice of readiness constitutes the contractual step which is required to trigger the commencement of laytime. Due to this, charterparties usually contain provisions which stipulate when notice of readiness may be contractually served and when laytime commences once notice of readiness has been validly served.

October 14, 2020



Stowage Factor (SF) is the density of the cargo in the ship’s hold. In the shipping business, Stowage Factor (SF) is a very important piece of information. 

Due to the ship’s cubic capacity, a ship has only a limited volume (space) in her holds. In some cases:

  • Light Cargo: the ship’s holds are full before all the ship’s deadweight cargo capacity is utilized 
  • Heavy Cargo: full deadweight capacity can be reached with space still available in holds, but that space is unusable

In the shipping business, some historic measurement systems are still in use, for example, variations of the old English system (imperial system) of weights and measures are still frequently used for Stowage Factor (SF) – cubic feet to one ton (ft3/ton). 

October 10, 2020

Reversible Laytime

In voyage chartering, permitting charterers to add up the laytime allowed for loading and discharging is called Reversible Laytime. In other words, any time saved (or exceeded) at the load port can be carried forward to the discharge port. Depending on the drafting of the relevant clause, charterers may only have a limited period of time for deciding whether to reverse.

July 3, 2018

Changes in Indonesian Government Policies


Some news about Indonesian coal business.
This is to inform you that due to some sudden changes in Indonesian Government Policies, export procedures have been changed with immediate effect. Exports being previously cleared on trade license now has to be processed under Miners Licenses along with export duties. Even the same is immediately functional for the shipments already loaded and therefore, no ship can sail or load further unless export duties and mine license documentation been done and therefore, all cargo already loaded has to be unloaded back to jetty.

May 10, 2018

Iran Sanctions



New sanctions for Iran are implemented. The statement on U.S. Department of the Treasury website states:

On May 8, 2018, the President announced his decision to cease the United States’ participation in the Joint Comprehensive Plan of Action (JCPOA), and to begin re-imposing the U.S. nuclear-related sanctions that were lifted to effectuate the JCPOA sanctions relief, following a wind-down period. In conjunction with this announcement, the President issued a National Security Presidential Memorandum (NSPM) directing the U.S. Department of the Treasury and other Departments and Agencies to take the actions necessary to implement his decision.

March 17, 2017

Ballast Water Management System and things you need to know about it


The Ballast Water Management Convention (the Convention), aimed at establishing standards and procedures to prevent the spread of aquatic organisms, enters into force and takes effect on 8 September this year. While it represents a significant environmental milestone for our planet, the Convention also means that the maritime industry has to gear up for a huge operational change.

Under the Convention, ships trading in international waters will need to ensure they are fitted with a ship-specific Ballast Water Management System (BWMS), according to the agreed implementation schedule. The BWMS installed must be approved by the Flag State in accordance with approval process defined by the International Maritime Organization (IMO).

May 10, 2016

Check list for Operations dept.

One of the main things to do, when a voyage is fixed and you operate vessel on time charter is drafting a check list for the voyage. Though it's not a very hard question, a check list may hardly be standardized, because it's structure depends on a particular voyage. However we may divide it into blocks and try to make universal rules for these blocks. Here's the example of blocks for an easy usual voyage basis 1/1 without passing channels.

April 26, 2016

Dry Bulk Rate Recovery Short-Lived?

Shipping rates for vessels transporting commodities such as coal, iron ore and grains racked up impressive gains in the first quarter of 2016 after hitting record lows, but the rally could flatten out into the second half as the macroeconomic outlook remains uncertain, the latest forecasts show from IHS Inc.



April 25, 2016

It's Now Cheaper To 'Buy' A Dry Bulk Freight Vessel Than A Starbucks Coffee

Just 3 months ago China’s slowing growth has crushed shipping rates to such an extent that hiring a 1,100-foot merchant vessel would set you back less than the price of renting a Ferrari for a day.




Rates for Capesize-class ships plummeted 92 percent since August to $1,563 a day amid slowing growth in China. That’s less than a third of the daily rate of 3,950 pounds ($5,597) to rent a Ferrari F40, the price of which has also fallen slightly in the past few years, according to Nick Hardwick, founder of supercarexperiences.com.

October 16, 2015

Draft alterations depend on water density

Good day

It happened that I forgot the formula for the calculation of vessel's draft at different water density, though I searched the Internet and found nothing in English. So I decided to translate the article, which I found in Russian.


When the vessel passes from one water basin to another, the salinity (seawater density) changes.  It's very useful to know the way vessel's draft will change. And for the determination of vessel's draft delta we will turn to physics.

May 15, 2015

Types of bulk carriers - part 2 (briefly)

In our previous post we have learned much about the types of bulk carriers. However in practice all one needs to know is always less, than they write in books. Thus, this article is here to show you all you need to know about classification of bulk carriers according to their size.

April 20, 2015

Types of bulk carriers

I would like to enlighten the basics, which will understand the whole picture. And another good book will help me out. It's named "Bulk carrier practice" by Captain J Isbester. It was written in 1990's, so the information might be outdated, but the basics are still the same:


April 14, 2015

CP proformas

Earlier I have wrote about what is a Charter Party. And now it's time to make a list of different CP proformas for easy reference. The list will be kept here and it will be updated from time to time.

April 10, 2015

Letters of indemnity




What is a 'Letter Of Indemnity'

In general Letter of Indemnity (LOI) is a letter guaranteeing that contractual provisions will be met, otherwise financial reparations will be made. The principle behind a Letter of Indemnity is the guarantee that losses will not be suffered if certain provisions of a contract are not met.

What is a 'Letter of Indemnity' in shipping

In case one party, which is providing the LOI fails to meet some provisions of the contract, which are also stated in the LOI, it will have to make financial repatriations, or cover financial losses of the other party, which is accepting the LOI connected with this breach. There are various situations in which a Shipowner or a Disponent Owner may be offered a Letter of Indemnity. In each case, this offer will usually be made in return for the Owner taking on some non-contractual risk.

Sometimes Owners request the LOI to be countersigned by Shippers and Shippers' bank together with Charterers' signature and stamp as a confirmation that goods are paid and Shippers do not mind of cargo discharging or changing the receiving party, or any other changes. However, that is not something that is requested very often.

Types of 'Letters of Indemnity'

Each situation, when there is a need in providing the LOI may totally differ from another. However, there are some types, that are most common and often used in shipping practice. These are LOI for:
- non presentation of BsL at discharge port;
- production of clean BsL (for shipment of unclean cargo);
- discharge and delivery of cargo at another port;
- switch of BsL;

The LOI is issued, when Owners are to be indemnified in one of the above-mentioned situations. And the possibility of any of above is usually stated in the governing Charter Party. In case, the Charter Party does not allow, for example, switch of BsL, then Owners have rights to refuse the switch and accordingly refuse to accept relevant LOI from Charterers.

March 15, 2015

Delivery clause - Time Charter Party

Good day, Everyone.
I would like to start an explanatory course about basics of time and voyage charter. In this article I will enlighten the specifics of Delivery Clause of time charter. It will be based on materials from a very good book named "TIME CHARTERS", author Terence Coghlin.

February 25, 2015

Stowage Factor of general cargoes

   Stowage factor (SF) indicates how many cubic metres (or cubic feet) of space one metric tonne of a particular type of cargo occupies in a hold of a cargo ship. It is calculated as the ratio of the stowage space required under normal conditions, including the stowage losses caused by the means of transportation and packaging, to the weight of the cargo. (Wikipedia)

February 16, 2015

What is a Charter Party?

The most general determination of a Charter Party term is:
A contract by which an entire ship, or some principal part thereof, is let to a merchant for the conveyance of goods on a determined voyage to one or more places.
Charter parties could be divided in the following basic categories: