Deadliest Catch Ship Design
Here’s a thought… have you ever watched Discovery’s ‘Deadliest Catch’? The story of the Bering Sea Crabbers. These guys are bringing in some pretty good money… literally millions for 3 months work.
After watching the show about ships sinking and people getting hurt… why don’t they move from surface ships to subs.
Take a old Delta Class Soviet sub (if you can find one… they should be relatively cheap). This boat is designed to carry 16 Intercontinental ballistic missiles and 6 torpedoes tubes. See this link for more info
Now a SS-18 off of a DeltaIII is 1.8m in diameter and 14m long. That’s roughly 12ft dia and 50ft long. You’d have to make round crab pots, but that should be a big deal (I say that with absolutely zero knowledge of crabbing equipment). In each launch tube (all 16) you mount three crab pots, one on top of the other. All connected to a extendable boom. You flood the launch tube, open the door, extend the boom with the pots attached, swing it from vertical to horizontal and lower the crab traps.
There is a small float attached to the crab trap and a sonar pinger (for locating the trap later). The float is only there to hold the catch wire up. This is the good part. To pick up the traps… you again extend the boom and as it brushes against the wire, an eletrical signal is created to let you know that the wire is touching the boom. A clamp activates and grips the wire. When the wire is caught, a roller engages and brings up the pot. It is snugged into the boom and the boom is lowered back into the launch tube.
Each SS-18 missile weighs 70 tons. A Delta three can carry 16 of them… plus torpedoes (each is 11 meters long weighing about 4 tons). Not to mention consumables for 130 crew members. I think you could carry a lot of crabs with that kind of hauling ability.
The big plus… you are totally dry, warm, and safe from any weather effects.
You just have to get a license to operate a nuclear reactor. Most nucboats have diesel engines… just take the reactor off and replace with batteries. You still have to snorkel, but you should be good for several days submerged at slow speeds.