If this is normal for you, then yes. Your period is heavy but for some women this is normal, it's not so heavy as to put you at risk and if your flow is normally heavy it's nothing to be concerned about. If you see flow increase more than this or start to feel weak then see a doctor.
same as normal, just dont wear a tampon. if you do, wake up every 2 hours to change it. Or you will get a serious infection.
There is no way that you would be expected to sit on a boat for 15 hours without any access to a toilet - it just wouldn't happen, if you have access to a toilet then you can change your tampon and pads. If you are ever in a situation where you can't change a tampon every 4-6 hours then you shouldn't use a tampon, you can leave menstrual cups or softcups in for up to 12 hours so could potentially go a little longer without risk.
A period lasting 30 hours can be normal as a period can be as short as one day.
relax! you don't have to worry. getting your period is normal. You just feel normal, except for wearing a pad. Just remember to change it every few hours.
By that you mean a tampon? I'm only 14 but when I use a tampon either something in my head tells me it needs to change or I feel something bubbling out. For you wait until 4-5 hours or until its leaking.
No, not neccessary. The tampon should be inside, beyond the urethra and not be affected, only the string and that should be OK for the next few hours.
During the day, change your pad every three to four hours to prevent odor, stains on your clothes, and possible vaginal infections. Source: http://www.plannedparenthood.org/teen-talk/watch/period-how-use-pad-tampon-cup-26793.htm
Tampons need to be changed every 4-6 hours.If your tampon leaks then you remove the tampon before this time, and if the tampon leaks within 1-2 hours you may want to use the next absorbency up. Remember you change absorbency as flow changes, if the tampon isn't saturated in blood after 4-6 hours you need to use lower absorbency or if already using lowest absorbency you need to switch to pads as your flow is too light for tampons.Many women use pads or pantiliners as back-up, especially when first using tampons.
Normal
Hi Heavy bleeding like this needs to be investigated by your doctor. Bleeding that is so heavy that it requires you to change your pad or tampon every 1-2 hours, is too heavy and definitely needs to be told to your doctor.
Of course! you have two main options. the first is to wear a tampon. this is the most effective. The second is to wear a thong pantyliner. these work on low flow days but not very well on heavy days. Of couse you can. Just be sure to wear a tampon when wearing a thong during your period. You don't feel a thing when you have it in you, but be sure to change it every 5-8 hours. Yes, but you can't put on a pad, you'd have to wear a tube.
It is recommended to change tampons every 3-4 hours but To avoid toxic shock syndrome (TSS), do not keep the same tampon in for more than 8 hours. If you keep your tampon longer, you can have toxic shock. Discover more in recommended related link below.