Boat portal perimeter farm

A perimeter general mob farm by FrunoCraft, episode 20 of his Git Gud in Technical Minecraft series and an hour long. The design is Bortal's lazy looting general mob farm: mobs spawn across an 85x85 area, are funnelled into boats and pushed through nether portals so they die on the other side, which clears the overworld mob cap instantly. MerongYee's kill chamber and storage handle the output and a gnembon ice farm feeds the build. It produces 1.4 million drops an hour and the video is largely the story of failing to add a looting kill chamber on top of that.

• Boats vanishing over time is lightning, not a design fault. FrunoCraft says keep lightning rods well away from the farm, and r0s463 confirms that solved it after months of rebuilding.
• The kill chamber explodes and nobody has fixed it properly. euklesio and Ka1nn_ both trace it to armoured spear zombies damaging a creeper mid fall, and Ka1nn_'s only working answer was blast proofing the chamber.
• 靈兒國外走到飛 relays a bilibili fix: attack on a 10 game tick interval at the same height as the nether side portal and teleport the drops back to the overworld.
• DarkAvenjer08 lifts the AFK player above the 128 block despawn sphere periodically with a bubble elevator, which clears baby zombies out of the mob cap.
• Three sea pickles work in place of each campfire.
• No bedrock breaking is needed under the farm, but it does need sky access or the rate collapses.