What tricks do smugglers go to in order to deliver goods that are beneficial to them to another country. Most illegal border crossings occur on land, sometimes by air. And if there is a sea or a strait between the states? Better means than submarines, and not to be found. But how to build them?
Most of the boats are primitive, some are disposable. The simple design has its advantages. For example, wooden boats are harder to notice by the electronics of patrol ships and aircraft. However, one should not think that all smuggling submarines are a solid "primitive". There are ships that can carry several tons of cargo and cost millions of dollars. But the lion's share of this money is spent not on manufacturing materials or equipment, but on their delivery to the construction site. After all, the "shipyard" is located, as a rule, in the jungle, estuaries.
Modern homemade submarines are becoming more and more advanced and many of them already resemble factory designs. Although, they do not pass tests, and there are no GOSTs in the forest. Statistics only confirm this: the patrol services manage to "fish out" 20% of illegal submarines. How are boats built, what is the design, sailing conditions? The author of the video on the TipTop channel talks about this.
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