Hot answers tagged

25

Let's say you lose 2 liters of water per day. To replace 2 liters of water by eating fish, you need to eat, for example, 2,500 g of cooked Pacific cod, which, besides water, also contains 500 g of protein and 3.4 g of sodium. Consuming 3.4 g of sodium (8.5 g of salt) per day is not that much; some people consume it on a daily basis. I calculated (from here) ...


24

Theoretically, it might be possible to survive on fish, rainwater and desalinated seawater. In one 1930 experiment, two men survived for a year eating exclusively meat without experiencing any health issues. This indirectly suggests that meat (and therefore possibly also fish) contain all the essential nutrients, but this was a small and relatively short ...


24

There are a few possibilities: Other Turtles This site about pet turtles mentions the possibility that turtles fighting over a mate (or actually mating) may end up on their backs. When breeding season comes around, adult male turtles might start fighting over the females. A stronger male might flip a weaker one over. Male turtles might also harass ...


16

The best answer I’ve come up with so far is to combine neoprene paddling gloves such as those sold by NRS with an additional pair of waterproof or semi-waterproof mitten shells designed to be worn over gloves / mittens. This has kept my fingers completely comfortable in air temperatures well below freezing while paddling through rivers or bays where ice is ...


14

... can someone gather/hunt/farm all of the nutrients required to be healthy whilst never having to land again? Nutrients yes, healthy not likely. A 1000 days is a grueling journey. Reid Stowe, whom used to have a website called (Beyond) 1000 Days at Sea: The Mars Ocean Odyssey, lived at sea (without contact with land) for 1,152 days (equals 3 Years, 1 ...


14

I haven't been paddling much for several years, but I used to go all winter with simple fleece gloves inside waterproof dishwashing rubber gloves. I tried a half dozen other alternatives, including wetsuit gloves, other waterproof gloves, pogies, etc. Fleece insulation and waterproof outside worked best, and was also very inexpensive.


10

Summary: Develop muscle memory for the basic move through instruction and repetition, develop robustness against external water conditions, and address the internal panic response. Develop muscle memory: get some instruction and then practice the basic mechanics of a roll until you can do it thoughtlessly. The investment in the instruction is well ...


10

In addition to the reasons given in @John Hughes answer, Predators may be another cause. This SeaWorld Parks & Entertainment page on the longevity and causes of death of sea turtles lists tiger sharks and killer whales (orcas) as the main predators of adult turtles. This YouTube video (also featured, with additional notes, in this LiveScience.com ...


9

In short, just the name. Fjord is of Norse origin, loch of Gaelic. They are the same feature, formed when glaciers debouch into the sea. In both countries, you'll find varying scales, from a few hundred metres in width to several kilometres.


8

Sometimes known as paddle mitts, pogies are your friends here, you can choose to wear gloves in them as well or not, depending on how cold it's got, but most importantly they allow you full contact with the paddle and hence you don't get the extra fatigue caused by a reduced level of paddle control. Pogies range from a simple nylon shell that keeps the wind ...


8

It looks like radar reflectors will not hurt but they aren't great either. The bigger and higher they are the better, which is easier to do on a sailboat than a sea kayak. According to one study, a homemade reflector worn on the paddler's hat provided the best signal reflections. The distance they can be seen regardless of a radar reflector is limited, ...


8

I'm pretty sure it's some kind of a suet cake/fat ball, i.e. bird's food, see the first image on the Wikipedia article: https://en.m.wikipedia.org/wiki/Suet_cake (Luc Viatour / https://Lucnix.be)


7

The most important factor is to have some slack in your roll. If you're only just coming up in flat water you're not going to be coming up as soon as there's an additional factor against you. Make sure that as you practice your roll you're not at the end of your movement as you come up. The places to find that slack are to: improve your hip flick ...


7

200 nautical mile. This link seems to be the most clear. An Exclusive Economic Zone (EEZ) is a concept adopted at the Third United Nations Conference on the Law of the Sea (1982), whereby a coastal State assumes jurisdiction over the exploration and exploitation of marine resources in its adjacent section of the continental shelf, taken to be a ...


7

Let's start with the terms lift and header. Suppose I want to go that way, whichever direction that happens to be. If the wind is coming from that way, then I can't do it, at least not on wind power alone. What I can do is sail slightly to the left of that way for a while, then tack slightly to the right of that way and so on. A change in the wind ...


7

Allow me to turn your question on its head a bit. Making yourself more visible to large vessels is a good idea, not being where they need you to be visible is a great idea. Stay away from channels, shipping lanes, and docking areas. You are small and in a craft that can turn and stop in mere inches- a laden freighter on the other hand, might measure those ...


6

Just taste it. As in this answer, normal saline matches what you have in you at 9 grams of salt to a liter of water (this is 9 times as much as Gatorade). If you ever try to drink the stuff, its way too salty to be enjoyable (and is normally given intravenously for dehydration). So if the salty water is too salty to drink, that means you shouldn't. Some ...


6

Can you keep yourself well hydrated, by consuming only ocean plants? Theoretically, yes, but you would need to consume a big amount of them. I'll use the same reasoning as in Can I get fresh water from ocean fish flesh? If you lose 2 liters of water per day and want to replace 2 liters of water by eating ocean plants, you need to eat, for example, 2,500 g ...


5

A lighthouse is one of the buildings in a light station and has the actual signaling light while light station refers to all of the buildings. A light station comprises the lighthouse tower and all outbuildings, such as the keeper's living quarters, fuel house, boathouse, and fog-signaling building. The Lighthouse itself consists of a tower structure ...


5

Much of our clothing, particularly outdoorsy technical clothing, is made of plastic (nylon is a plastic). The plastic in our clothing is largely inert, but it is subject to mechanical wear and tear. Every time you wash your plastic clothing small bits of bit are broken off, and are distributed throughout the environment. How far they go depends on how your ...


5

One obvious activity that will appeal to many (but not all) outdoors people is watching the local wildlife. The sort of voyage in the question can't be far from shore, so watching for birds and cetaceans is a good way to spend time on deck. Ideally you'd have field guides (which may also be interesting reading) and binoculars (not necessarily a pair for ...


5

To some extent, this is mapped out, but the easier way to tell is by the color of the water. Ocean deserts are characterized by less plankton and thus Chlorophyll. Therefore, the water in an ocean desert will be bluer and less green than the water in an area with plenty of nutrients and oxygen and plankton. Since nutrients are the limiting factor in ...


5

You can find a user manual on the website of the fabricant, and interesting comments in the product page on Amazon. While I found no direct answer to your question, a sentence from the user manual is interesting: During prolonged emergency use, pump the unit for at least 10 minutes each day to keep seawater from stagnating inside the unit. So it seems ...


4

You can't "filter" dissolved salt from seawater. Either the description you found is dumbed down for the masses, or just plain wrong. It is possible to separate seawater into concentrated brine and fresh water by reverse osmosis. If managed properly, RO membranes last a long time. This is nowadays the standard way to make fresh water on ocean-going ships....


4

This very much depends on what sort of voyage it is. Learning the skills required to handle the boat would be a classic. Specifically learning navigation and standing watch. We used to spend a lot of time playing cards and doing decorative knotting as teenagers on longer voyages. If you're on a small crew vessel, scrubbing the decks doesn't take much time ...


4

When going upwind, a header is when there is a wind shift towards your bow, which would make you deviate further from your original heading provided you don't adjust trim. A lift is the opposite. Here's a nice illustration. After checking out the product, I think I understand what it does: When you've been on a certain heading for enough time, the ...


4

As the other answer suggests, this is a sea urchin. Specifically, it appears to be a commonly caught species off Maine called Strongylocentrus droebachienisis, which is commonly called the green sea urchin (or Atlantic green urchin). Source: brownetrading.com The OP's image shows the urchin's mouthparts (the so-called "teeth" of Aristotle's lantern), ...


3

First, I would like to give a definition of a smaller term, that of just "light." For this, I turn to the U.S. Coast Guard. In this brief PDF of the Aids to Navigation System, we get a couple helpful quotes right on the first page: These aids may be anything from lighthouses, to minor lights, daybeacons, range lights, and sound signals, to lighted or ...


2

Assuming that you are looking for the ideal conditions for a surfable wave to form, I will leave some of the conditions that I take in consideration Wind Direction. The wind direction is essential and ideally look for offshore (wind blowing from the shore). The speed of the wind is related with the size of the wave. The longer the wind blows the larger ...


2

When building their nest, octopus usually place some kind of shiny object at the entrance to find the place back if they leave. They probably don't for their eggs, as they don't leave them, but you never know. In any case, the best way to ensure you won't disturb them is to keep your distance from reefs, so that you don't scare them. Another thing to be ...


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