Category: Marine Cargo Surveyor

Draft Survey: The Other Side

Distance Draft Mark From Perpendiculars

marine cargo ship surveyors

The above picture show you the distance of draft mark to perpendiculars. Some of you may have finds the above arrangement. But how if you find it for the first time? How do you calculate it?

Commonly in the table for draft correction, the distance of draft mark measures to the nearest perpendiculars such as;
Distance of Aft Draft Mark to Aft Perpendicular, Distance of Mid Draft Mark to Mid Perpendicular and Distance of Forward Draft Mark to Forward Perpendicular.
But the above picture shows:
The X1 is represent the Distance of Aft Draft Mark to Aft Perpendicular. (same figure)
The X2 is represent the Distance of Mid Draft Mark to Aft Perpendicular.
The X3 is represent the Distance of Forward Draft Mark to Aft Perpendicular.
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Updated: Marine Survey Software

seven surveyorRecently, I have updated marine survey software for better performance and assist your fast calculation during surveying. In this version there are some updates includes:
– Clean and Larger interface with simple and easy data input for the survey.
– The software created basis Microsoft Excel files that works best with excel 2007-2013 and it could also working with excel 97-2003.
– The presentation is creates by Microsoft Power Point basis, it totally free to download. All version PP enable to open this.
– Smaller size file and performs faster file access.

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Draft Survey: Barge Overhang Method

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I found this alternative method from draft survey course book, hope it usable. Frankly, I never use this method yet, as we required the barge owners to provide the hydrostatic table for draft survey.

The overhang method use the same principles with the method of calculating the volume of a prism. The weight of the barge will be getting by multiplying the volume with the water density where the barge is afloat. Measure the dimension of the barge, before and after the loading/discharging is required for the length and width of the barge, barge freeboard, overhang aft and fore.

The method is applied when :
– The barge is of cut-up type.
– There is no table or data.
– The concerned parties agree on the use of overhang method for weight determination of barges.

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International Institute of Marine Surveying

marine cargo ship surveyorsAs marine surveyor, you might need organisation to develop your knowledge and experience. Today I will post you one of them called International Institute of Marine Surveying (IIMS). This is an independent, non-political organisation promoting the professionalism, recognition and training of marine surveyors worldwide. The IIMS is held marine surveying training, short courses and distance learning. Right now, the representative office was spread at several countries. Here a brief description about IIMS.

The IIMS is a membership organisation and since 2004 has increased its membership worldwide to cover 98 countries.  It is the largest organisation of its kind in the world, and seeks to represent its industry to government and non governmental organisations such as the International Marine Organisation (IMO), Coastguards, insurance companies and ship owners.
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Cargo: Definition and Terminology

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Air draught – means the vertical distance from the surface of the water to the highest point of the ship’s mast or aerial.

Bale space capacity – is that cubic capacity of a cargo space when the breadth is measured from the inside of the cargo battens (spar ceiling) and the measured depth is from the wood tank top ceiling to the underside of the deck beams. The length is measured from the inside of the fore and aft bulkhead stiffeners.

Broken stowage – is defined as that space between packages which remains unfilled. The percentage that has to be allowed varies with the type of cargo and with the shape of the ship’s hold. It is greatest when large cases are stowed in an end hold or at the turn of a bilge.

Cargo information – means appropriate information relevant to the cargo and its stowage and securing which should specify, in particular, the precautions necessary for the safe carriage of that cargo by sea.

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Hold Cleanliness Survey

marine cargo ship surveyors

Hi marine cargo surveyor. :). It was about three months with no posting, as I have faced busy days.

Previously, we have discussed topics about Draft survey : Terms of Conduct, Draft Survey : Procedures and Calculation, Draft Survey : Specimen of Calculation, How To Conduct Bunker Survey, and Bunker Survey Calculation. Appreciated every feedbacks and comments around the posts.

In this posts, I will generally introduce about cargo hold cleanliness survey. The hold cleanliness survey is conducted to ensure the cargo hold condition before loading by inspected whether the hold is ready to load the nominated cargo or not.

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Software: Bunker Survey and Petroleum Calculation

marine cargo ship surveyors

I have added some software relate to oil calculation. The software are:

1. BunkerCal
A Bunker Tank Sounding calculation program. Bunker survey calculation for tank sounding report based on ASTM Table 54B .
Follow this link to know more http://www.sevensurveyor.com/software/surveysoft-marine-surveyor-software/

2. OilCal
A Petroleum calculation program. For shipboard survey with calculation and ullage report based on ASTM Table 6A, 6B, 54A and Table 54B.
For more info check here: http://www.sevensurveyor.com/software/surveysoft-marine-surveyor-software/.

Hope the software is useful. Please try it and drop your comment here.

Regards,
Surveyors