1. Punctuality
Punctuality is probably one of the primary bastions of professionalism in any field and needless to say, seafarers are required to be punctual in every aspect of their life on board ships; vis-a-vis shore-leave or reporting for watch-keeping duties, seafarers must value time on board ships. Delay of any kind of operation can lead to the delay of the whole ship, resulting in loss of both time and money.
2. Drinking
Sobriety is essential to the basic functioning of manpower onboard a merchant ship. With the value of the ship and her cargo running into millions of dollars, navigating the vessel under the influence of alcohol seems ridiculous in every way. Most ship owners have prohibited the consumption of liquor onboard, i.e., enforced a ‘no alcohol’ policy. In the case where such a policy is in effect, it is mandatory to adhere to it.
3. Drugs
As with any other workplace, narcotics are a complete no-no onboard (as well as ashore, while on shore leave). It is unlawful to consume, possess, or distribute drugs on board ships. A seafarer found guilty of consuming or possessing drugs, is liable to dismissal from his or her job and also subject to legal proceedings. It is to note that certain countries have very strict rules against drugs which involve capital punishment. The act of transporting it is a guaranteed route to really long/lifelong imprisonment; it is therefore advisable to every seafarer to steer completely clear off of any such activity or habits. Not to forget, the risk posed to the safety of the vessel when narcotics are in question, whether it pertains to consumption or transportation, is immense.
4. Weapons
Any kind of offensive weapons which can be fatal are not allowed on board ships. A seafarer found guilty of such acts is liable to legal proceedings and suspension. It is possible that the country one is in has lax gun laws enabling easy purchase and use of weapons; as with the contrabands mentioned above, it is best to steer clear. Certain flags might allow the Master to have a gun for the safety of the vessel but under no circumstances is the individual carriage of any weapon allowed onboard. Punishment for this is also extremely harsh, and rightfully so.