Ship Navigation

Rajeev Jassal
Rajeev Jassal Master

Here is a blog that I wrote on "Speed over ground and speed through water". This might help.

Speed Through water or speed over ground, Which one to use?

If you any other specific question on this, do not hesitate to ask.

Rajeev Jassal
Rajeev Jassal Master

I totally understand the confusion here and trust me, you are not alone. Imagine a cadet being subjected to these tough sentences. I believe if the circumstances of the case admit, there should be a simpler version of the rules of the road.

Ooops.. I used it too. But don't worry. I will si

Anirban Sarkar
Anirban Sarkar Third Officer

Confined waters are the waterways where the width of the waterway (not the navigable channel in the waterway) is below 8.5 times of the beam of the vessel.

Seafarer
Seafarer Deck Cadet

A give way vessel can be classified as a vessel that is directed by the COLREGs to keep out of the way of another vessel and avoid a risk of collision or a close quarter situation.

A stand on vessel would be the one which has been directed in accordance with COLREGs to keep it's course and spee

Rajeev Jassal
Rajeev Jassal Master

Indeed a very good question.  To answer this, I would first highlight the fact that putting the rudder on midship when engine is running astern is a practice rather than a rule.

There is no rule that we have to keep the rudder on midship when giving astern movement on the engine.

But why

Prateek Yadav
Prateek Yadav Chief Officer

Trawler is a type of Fishing Boat. Trawler can be easily described where some sort of Drag Net, Beam net are used ETC. Before we go further we should know what is Trawl. Trawl means Fishing Net, now these nets are used to pulled along the bottom of the sea or in mid water at a specified depth. Trawl

Prateek Yadav
Prateek Yadav Chief Officer

In a restricted channel, when the ship moves near the bank, the bow is pushed away from the bank, an effect known as bow cushion, and the vessel is bodily attracted toward the bank, an effect known as bank suction. The bank cushion results from high pressure buildup between the bank and the bow of t

Rajeev Jassal
Rajeev Jassal Master

ENCs need to be corrected to the latest notices. The easiest way of doing that is by just inserting the Base cells and update DVD. 

But the issue with that is, these DVDs arrive months after its release. And for these months your ENCs will not be corrected to the latest "notices to

Rajeev Jassal
Rajeev Jassal Master

As you would already know there is no range mentioned in the ROR for definition of "Restricted visbility".

As per ROR

The term ‘restricted visibility’ means any condition in which visibility is restricted by fog, mist, falling snow, heavy rain- storms, sandstorms or any o

Prateek Yadav
Prateek Yadav Chief Officer

Range at which risk of collision can be considered is very difficult to Answer.

Prior to Risk of collision we should consider the Close Quarter Situation. Which can be defined as unable to maintain the required CPA. Now the question arises CPA requirement is generally given in SMS and in Master'

Rajeev Jassal
Rajeev Jassal Master

I recently wrote a detailed post on "position fixing". This includes the position fixing on paper charts as well as plotting positions by various methods on ECDIS.

You can read it by clicking below link.

Position Fixing: The Most Important Element of Passage Planning

Let me know i

Rajeev Jassal
Rajeev Jassal Master

First things first. We need to select only the largest scale charts for navigation. This is because of obvious reason that these charts are in more detail. But does that mean that we do not need the small scale charts ? Absolutely not !!! We still need small scale charts for passage planning.

ima

Rajeev Jassal
Rajeev Jassal Master

There is no legal relationship between Master and Pilot other than that the pilot is engaged in an advisory capacity to provide guidance to the master regarding local conditions.

The Master of the ship is expected to know everything related to the berthing a ship to a berth of a port. Legally the r