10 Professional Mistakes Seafarers Should Never Make

There is no dearth of stress on board ships. Ask a seafarer and you will know what it takes to work on board. It is the ultimate test of both physical and mental strength.
No mariner is born smart! One has to learn the ropes of the game, avoid the pit falls, and play it safe.
In this difficult job market, a mariner must know what not to do in order to prevent any kind of professional trouble.

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Operation of FRAMO Cargo Pumping System

Loading the cargo tanks, Discharging of parcel cargoes, Discharging of homogeneous cargoes (parallel pumping), Cargo heating by deck mounted heaters, Stripping, Tank cleaning.

1.0 LOADING THE CARGO TANKS

Correct operation of pumps and valves is essential to avoid pressure surges in a cargo

pipeline system during loading. Pressure surges may cause severe damage to the pipeline, hoses, metal arms and cargo pumps. Pressure surges will be excessive if a valve is closed too quickly and especially where long pipelines and high fl ow rates are involved.

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Measurement of propeller roughness

There are three main choices in technique for measurement of propeller roughness.

1. Stylus instruments in situ.
2. Stylus instruments following replication.
3. Comparators.

Stylus instruments are used in situ for the finishing of new propellers in the foundry. Compact instruments are available with digital readout, but the instrument is considered too delicate for routine dry-dock use.

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Polished propellers the smoother way to greater economies

Smooth propellers save money is the message ship operators are being told. But owners must be able to weigh the cost of propeller roughness against the expense and timing of maintenance schemes -- an equation requiring detailed understanding of blade roughness and its measurements.
EXTENSIVE STUDIES carried out by the British Ship Research Association (BSRA) have shown that a power loss of up to 6% can result from a roughened propeller.

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Pollution from Inert Gas Scrubber overboard discharge

There has been a recent increase in number of incidents involving pollution from the Inert Gas Scrubber overboard discharge. The purpose of this Safety Alert Bulletin is to highlight this trend to all tanker operators especially those who are, may be, or aspire to be engaged in ExxonMobil affiliate business. It is hoped that this bulletin will cause such operators to review their internal procedures / guidelines for operations relating to Boilers and the Inert Gas Generator / System, including inspection and maintenance of machinery and equipment.

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Nautical Calculators

The Nautical Calculators can be used to solve many of the equations and conversions typically
associated with marine navigation. Use the Options Menu above to select a category of Nautical Calculator.

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