Last Voyage of the USS Constitution is a Side Quest in Fallout 4 (FO4). Know who to side with on the Last Voyage of the USS Constitution and read on for a detailed Last Voyage of the USS Constitution walkthrough, its location and rewards!

Last Voyage of the USS Constitution Location

Where to Start Last Voyage of the USS Constitution

Map View	USS Constitution
Quest Giver	Lookout

Last Voyage of the USS Constitution Walkthrough

1. Go to USS Constitution and Talk to Lookout
2. Talk to the Captain
3. Repulse Scavenger Attack
4. Talk to Bosun and Repair the Ship
5. Talk to Mr. Navigator
6. Recover the Guidance Chip
7. Install the Guidance Chip and Talk to Mr Navigator
8. Acquire Poseidon Radar Transmitter and Fix Radar
9. Speak to Captain Ironsides
10. Acquire the FLL3 Turbo Pump
11. Fix the Turbo Pump and Return Upstairs
12. Fight Off the Scavengers One Last Time Then Talk to Ironsides
13. Fire Up the Auxiliary Power

Go to USS Constitution and Talk to Lookout

To begin the quest, you will need to go to USS Constitution which can be found just beside Bunker Hill.

Talk to Lookout and the quest will begin. He will ask you to talk to Captain Ironsides.

Talk to the Captain

Head inside the bank and go upstairs until you find a hatch, this will lead you inside the ship.

Go all the way up until you reach First Mate, from there go up the ladder one last time and find another hatch that leads to the surface of the ship, the Captain is here, talk to him, and accept the task.

Ask for Rewards

If you pass a Charisma check, you can ask for rewards up front and get 100 Caps.

All Charisma Clothing

Repulse Scavenger Attack

After the conversation with the Captain, the ship will be attacked by Scavengers. Help them repulse the attack by activating the cannons beside you, attacking them from aboard the ship, or going down and dealing with them one by one.

Once enough Scavengers have been taken down, they will retreat and you can continue with your quest.

Talk to Bosun and Repair the Ship

After the Scavengers retreat, head down the latch and talk to Bosun. He will ask you for repairs on the ship.

Ship Repair Guide

#	Step by Step Guide
1	Get Power Cable from the Metal Box After talking to Bosun, turn to your left, and the metal box containing the 3 new Power Cables is found here, get them.
2	Install First Power Cable After grabbing the new Power Cables, open the Power Cable lid beside it and install the new ones.
3	Install Second Power Cable Go down one floor and find the second Power Cable terminal that's already open, install the second Power Cable here.
4	Install Third Power Cable The third Power Cable is found on the same floor connected to a wall. Open the lid and install the third Power Cable.
5	Report to Bosun Once all the new Power Cables are installed, report back to Bosun. He will now ask you to repair the Power Relay.
6	Repair or Buy Replacement for Power Relay Coil The Power Relay is on the same floor of the ship as Bosun's. You can choose to repair the Power Relay if your Intelligence is at 5 or higher only, otherwise you'll have to purchase a new one from a merchant or scavenge it from robot enemies.
7	Return to Bosun After successfully repairing or replacing the Power Relay, return to Bosun to finish this part of the quest.

Talk to Mr. Navigator

After repairing the ship, head outside and find Mr. Navigator just after exiting the USS Constitution. He will ask you to get the Guidance Chip from the Scavengers.

Recover the Guidance Chip

Make sure to have the quest marked so you will know where to go. The Guidance Chip is located not far from the Ship, travel to the designated marker via your map, Find Mandy Stiles and talk to her.

Mandy will try to convince you to join forces with them but this is not recommended as if you do, the quest ends with them trying to kill you.

However, you can pretend to side with them and change your mind later on to avoid violence in getting the Guidance Chip. Do this to avoid fighting.

Install the Guidance Chip and Talk to Mr Navigator

After peacefully getting the Gudance Chip, climb aboard the ship again and install the chip in the Core Guidance System. Talk to Mr. Navigator afterward at the forefront of the ship to get 250 Caps as a reward.

He will then be asking you to find a Poseidon Radar transmitter to replace the old one.

Acquire Poseidon Radar Transmitter and Fix Radar

Map	World View

Mr. Navigator will put markers on your map on where to get the transmitter. Head to Poseidon Energy Turbine 18-F, a small walk to the south of West Everett Estates.

Enter the facility and at the lowermost level is a room with a steamer trunk, the transmitter is inside.

Fast travel back to the ship after collecting the transmitter and fixing the Guidance Radar. Talk to Mr. Navigator afterward to receive another 250 Caps as a reward.

Jury Rig the Radar

If your Intelligence is at Level 9 or higher, you can choose to Jury Rig the radar and fix it there instantly without going to the Poseidon Energy facility.

Best Intelligence Perks

Speak to Captain Ironsides

Speak to Captain Ironsides after getting your reward and he will give you the Captain's Quarters Key and set you on another quest, to find the Turbopump Bearings!

Acquire the FLL3 Turbo Pump

The captain will mark a random factory location for you on the map. Go to this location to retrieve the Turbo Pump. The location marked can either be any of the three:

Map View	Location Informatyion
Corvega Assembly Plant	South of Lexington
Fort Hagen	Westmost factory found on the edge of the map
General Atomics Factory	Northwest of The Castle

Fix the Turbo Pump and Return Upstairs

After acquiring the required turbo pump, fast travel back to the ship and use the Captain's Quarters Key to open the door behind Bosun.

Inside is the turbo pump, go ahead and install the one you have and go upstairs to report to the Captain.

Fight Off the Scavengers One Last Time Then Talk to Ironsides

You will need to fend off the Scavengers one last time before you can talk to Captain Ironsides. This battle will be much lengthier so equip rifles and utilize VATS mode more often.

After the scuffle, talk to Captain Ironsides and he will give you the Broadsider weapon and set you on another quest one last time.

Best Rifles and All Rifles List

Fire Up the Auxiliary Power

Head up to the top of the building nearby where the ship is connected, and activate the circuit to fire up the auxiliary power.

This will end the quest. However, you can go back anytime to the ship and once you do so, talk to Captain Ironsides to receive the Lieutenant's Hat.

Lieutenant's Hat ID, Location, and Stats

Who to Side With in Last Voyage of the USS Constitution?

Side With Captain Ironsides

The fork in the quest starts when Captain Ironsides tasks you with getting the FLL3 Turbo Pump. By giving the turbo pump directly to the Captain and fixing the circuit, you will automatically side with them.

Siding with Captain Ironsides' team provides you with the Broadsider weapon which is really strong and the Lieutenant's Hat.

Last Voyage of the USS Constitution Quest Summary and Rewards

Last Voyage of the USS Constitution Rewards and Quest ID

Last Voyage of the USS Constitution Overview
Rewards	・ XP: 558 ・ Caps: 500 ・ Broadsider ・ Lieutenant's Hat ・ Captain's Quarters
Quest ID	00022A02

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