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If a fishing net or line was strong enough to stop a sub, then no sane commercial fisherman would ever pay the extra $$$$$ for it, to get that that level of ove

If a fishing net or line was strong enough to stop a sub, then no sane commercial fisherman would ever pay the extra $$$$$ for it, to get that that level of overkill. Plus, the "nuclear-strength" net or line would weigh a LOT more, and fishing involved plenty of hauling your stuff out of the water & other handling.

mmooss 2y ago
For safety, you do not want it to stop the sub. You want the sub to tear right through it or else the sub is going to take your boat with it, and what if the sub decides to dive?
- bell-cot 2y ago
  Sorta kinda. The sub could be stopped, in the sense of "badly tangled in our equipment, and will need to stop and get untangled", without actually hauling the fishing boat along after it. Maybe the equipment wasn't well secured to the boat. Maybe your savvy crew realized the problem and cut loose. Either way, you're out some expensive equipment.
Animats 2y ago
Here's a modern commercial fishing net: [1] The net itself isn't that heavy per unit area; it's just big. The top support line of the net is a string of floats, like pool lane markers, but larger. They're fishing for herring, not the Great White Whale. Anti-submarine nets are far, far heavier.[2] MESH ROPES: - flexible steel galvanized wire rope This is a single strand, flexible steel galvanized wire rope consisting of 70 wires and 21 hemp yarns. It is one-inch in diameter, has a breaking strength of 98,280 pounds and is internally lubricated and protected against the action of salt water by saturating the fiber cores with a preservative composition. It weighs 1.8 pounds per running foot and is supplied on reels carrying 3,000 feet of wire and weighing 5,000 pounds packed for shipment. The top support line of a submarine net looks like a bridge cable. The floats are the size of cars or larger. [1] https://www.youtube.com/watch?v=k_CP6VtgDVc https://www.youtube.com/watch?v=k_CP6VtgDVc [2] https://maritime.org/doc/netsandbooms/index.php https://maritime.org/doc/netsandbooms/index.php

mmooss 2y ago

For safety, you do not want it to stop the sub. You want the sub to tear right through it or else the sub is going to take your boat with it, and what if the sub decides to dive?

bell-cot 2y ago
Sorta kinda. The sub could be stopped, in the sense of "badly tangled in our equipment, and will need to stop and get untangled", without actually hauling the fishing boat along after it. Maybe the equipment wasn't well secured to the boat. Maybe your savvy crew realized the problem and cut loose. Either way, you're out some expensive equipment.

Animats 2y ago

Here's a modern commercial fishing net: [1] The net itself isn't that heavy per unit area; it's just big. The top support line of the net is a string of floats, like pool lane markers, but larger. They're fishing for herring, not the Great White Whale. Anti-submarine nets are far, far heavier.[2] MESH ROPES: - flexible steel galvanized wire rope This is a single strand, flexible steel galvanized wire rope consisting of 70 wires and 21 hemp yarns. It is one-inch in diameter, has a breaking strength of 98,280 pounds and is internally lubricated and protected against the action of salt water by saturating the fiber cores with a preservative composition. It weighs 1.8 pounds per running foot and is supplied on reels carrying 3,000 feet of wire and weighing 5,000 pounds packed for shipment. The top support line of a submarine net looks like a bridge cable. The floats are the size of cars or larger. [1] https://www.youtube.com/watch?v=k_CP6VtgDVc https://www.youtube.com/watch?v=k_CP6VtgDVc [2] https://maritime.org/doc/netsandbooms/index.php https://maritime.org/doc/netsandbooms/index.php