The only way you can get to Roland is by boat, but the only one you have access to is dead. See how to load the boat in Flotsam Vale in Another Crab's Treasure to find the treasure.
How to charge the boat battery in Another Crab's Treasure
Since Roland gets away with the treasure map, the only way to chase him is by boat through all the junk. However, the only boat does not have a working battery. Here's how to charge the boat battery in Another Crab's Treasure so you can get to him and get the map back.
To recharge the battery, you will have to go through Scuttleport, Roland's Shellfish Corp.'s primary waste poaching facility. Right at the beginning, you will see a plug that lacks a fuse. You must find it to open the door to the facility. Fortunately, this first fuse is just to the left of the door.
After you open the door, go through the building and out again to activate a Moon Snail teleport Make your way forward until you reach a second plug. This time, the switch next to it will give you a spring bark instead of a fuse.
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Wear the spring shell and stand under the a big magnet. When you are right under it, press the block button, and you will be lifted up. Now, it's easy to jump on the platform and grab the second fuse. Once you plug it in, go back into the magnetic beam and let it lead you to a new area.
The goal is to climb all the way to the top so you can move to the next building. Climb the stairs and go outside, fighting all the pesky crabs in your way. You will achieve a a crack in the wall go back inside, but be careful because there is a hammer crab with electrical powers waiting to kill you as soon as you step into the building.
If you don't feel like fighting it, you can just quickly jump to the a sponge to the left and on the beams. From here, you will go to the network with the hedgehogs so you can hook on and climb. Jump on the ledge behind you and you'll reach Firth, another Moon Snail Shell, and a shortcut that's there if you fall to the ground (which happened to me so many times).
Wait for the big magnet to arrive and take you to a new building. It will drop you right in front of the third fuse plug. The stairs that lead up are broken, but you don't have to go that way anyway. Instead, drop all the way down down to the ground and follow the big pipe. It will take you to the third fuse.
Climb back up using various hooks and put the fuse in the plug. This will activate elevator which will bridge the gap between the broken stairs. You can now climb up jumping on it. Be careful not to slip off because it's quite a hassle to climb all the way up again.
Keep going up until you reach the roof and the fourth fuse plug. You'll also see another hammerhead crab in the corner on the right. You can easily avoid combat by going left and around the rubble blocks until you reach the fourth fuse in the extreme left corner. Once you catch it, go back the same way and tuck it in.
This time, you will move hooks which you can use to get over to the roof of the next building. On the roof, you'll find another Moon Snail that you need to activate before you leave down the hole in the floor Once you go down, you'll find another one magnet that will take you to the next area.
Remember that when you drop down to the new building, you will be attacked by a hammer crab. There is fifth fuse plug right behind it, for which you need to find a fuse. Jump down to the platform below to avoid being killed. Kill the crabs and go into the room with the a sponge. Jump on it and you will find the fuse.
When you plug it in, hook will fall, which you must catch, because it will lead you to the a roof. Now this is where it gets pretty tricky. The switch for the fuse is on the roof, but the fuse will appear in a different area. You must be vvery quickly if you want to get it before it's gone. Click on the turn on then rush up the green network.
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once up, jump over the edge and onto the platform. Hook yourself to the purple net and cross, watching out for the sea urchins, until you can jump on the platform below You will have to make your way across and up the stairs to finally capture the sixth fuse. The plug is right below; there is also a Lunar Snailshell there that you should activate.
When you insert the fuse, two gas tanks will appear and you can go through them. In the next area, you'll find the last plug on the roof. There's also a switch right next to it, but unfortunately, it's not that easy. The switch is for the spring shell, which is useful if you don't already have one.
The fuse is nearby, but you can only get to it by stepping under the a magnet which surrounds this area. It will take you up on some piles of garbage to the right, where a hammer crab and the last fuse waiting for you Grab the fuse quickly and jump back down to plug it.
Now you are officially done with fuses. Go down the stairs and go across the platforms to the last area. You will see a pipe in the ground. Jump down it to face down and defeat the boss Voltai, the Accumulator. Once you do, you will get the Electrocution adaptation which can charge the battery. Jump down the shaft and go back to the boat so you can hunt.
If you want to get everything in the game, be sure to check it out All Trophies and Achievements in Another Crab's Treasure on Pro Game Guides.
