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How to Fish Boat Upgrades Guide: Best Upgrade Order

Follow the verified How to Fish boat route from Boat Keys to radar and Dual Motors, with costs, unlocks, and purchase priorities.

9/1/2026 1.0.10 Last updated: 9/1/2026 7 min read

FAQ

How do you unlock the boat in How to Fish?
Complete the Lighthouse opening, catch and defeat the Spider Crab with the empty beer can lure, then return its remains to the old fisherman. Current playthrough evidence shows that this hand-in awards the Boat Keys.
What is the best boat upgrade order?
Buy the $10 handheld Radar first, then fund the weapon and lure that unlock the next island. Buy the $230 Big Motor when travel time becomes the bottleneck, the $200 Boat Radar at Rocks, and the $860 Dual Motors after core combat gear is ready.
Do you need boat engine upgrades to finish the game?
Current independent guides agree that the standard boat can reach the full route. Engines mainly save travel time, although the best engine is required for the I am speed achievement. Story lures, boss hand-ins, and navigation information are more important progression gates.

What is the best boat upgrade order in How to Fish?

Unlock the standard boat, buy the $10 handheld Radar, and keep the base engine until travel time—not combat or bait—is the main bottleneck. The practical route is Radar → $230 Big Motor → $200 Boat Radar → $860 Dual Motors. Required weapons and lures should interrupt that order whenever they block the next island.

OrderUpgradeReported costUnlock conditionPriority
0Standard boat and Boat KeysQuest rewardDefeat Spider Crab and return its remainsMandatory
1Handheld Radar$10Boat route opens at LighthouseMandatory for coordinate navigation
2Big Motor$230Shop access on Forest / Island 2Optional early speed
3Boat Radar$200Shop access on Rocks / Island 4High-value navigation convenience
4Dual Motors$860Red shed/shop on Rocks / Island 4Best speed, buy late

The exact landmark description for Dual Motors differs between guides. Rocks/Island 4, the $860 price, and its best-engine status agree; whether the shop is best described as behind the casino or near the grill is Pending verification (待核实).

How do you unlock the standard boat?

Complete the Lighthouse tutorial, obtain an empty beer can, use it to bring up the Spider Crab, and defeat the boss. Return the remains to the old fisherman rather than selling or cooking them. PC Gamer’s playthrough confirms that this hand-in awards the Boat Keys and opens the trip to the Forest.

This is the first example of a rule that matters throughout the story: preserve unusual boss parts until the named quest giver accepts them. Steam players report failed progress after trying to hand over ordinary meat instead of the trophy or body the quest expects.

The beginner walkthrough covers the complete Lighthouse sequence, while the boss guide focuses on the fight itself.

Why should the handheld Radar come before an engine?

The handheld Radar is a progression tool, while an engine is initially a comfort upgrade. Later directions use coordinates, so the $10 device solves a hard navigation problem for almost no money. A faster boat only shortens a trip you can already make, and it cannot replace missing coordinates, bait, or boss damage.

Buy it as soon as the boat becomes usable, then keep it available when a quest supplies a destination. The device should not be confused with the later Boat Radar, a mounted navigation convenience reported at Rocks.

ItemMain jobCan it unlock progress?When to buy
Handheld RadarRead coordinatesYes, when a quest gives coordinatesImmediately
Big MotorShorten travel timeNo confirmed island gateAfter weapon/lure needs
Boat RadarImprove repeated route navigationNo confirmed story gateAt Rocks if you revisit often
Dual MotorsMaximum engine speedAchievement and convenienceLate game

When is the $230 Big Motor worth buying?

Buy the Big Motor after the Shotgun or another dependable weapon, the current lure, and a small cash reserve are covered. Independent guides place it on the Forest for $230. It is a meaningful speed improvement, but it does not increase sale value or make a blocked boss easier to defeat.

Use a bottleneck test:

  • If you cannot find the destination, buy or use the Radar.
  • If you cannot catch the target, buy the correct lure.
  • If the boss escapes or overwhelms you, improve weapon damage.
  • If all three are solved and sailing dominates the run, buy the Big Motor.

The published money-making guide applies the same test to every major purchase.

When should you buy the Boat Radar?

Buy the $200 Boat Radar after reaching Rocks if repeated navigation is slowing collection, cooking, or boss-preparation trips. It is more useful for players revisiting several islands than for a straight story rush. Current guides agree on its price and late route, but do not show it as a mandatory story gate.

If money is limited, compare the next objective. A Professional Boss Lure or weapon upgrade can open the Albatross route; the Boat Radar cannot. For a collection sweep, the radar becomes more valuable because the player repeatedly crosses known routes.

Where are the $860 Dual Motors?

The Dual Motors are sold on Rocks / Island 4 for $860 and count as the best engine for the official I am speed achievement. Guides describe a red shed in the casino/grill area, but their landmark wording conflicts. Use the island and price as the reliable facts and check nearby shop buildings in the live version.

This upgrade belongs late because it improves every future crossing without solving a specific catch or fight. It is excellent before a Fishipedia cleanup or achievement sweep, but buying it before the current boss loadout can leave the boat fast and the player stuck.

Do engine upgrades unlock islands?

No current source identifies an island that requires a faster engine. The standard boat can follow the main route; islands open through NPC quests, boss encounters, preserved hand-ins, and coordinate information. Engines change travel time, not the underlying story dependencies.

Story gateWhat actually clears it
Leave LighthouseSpider Crab hand-in and Boat Keys
Find a destinationCorrect quest coordinates plus Radar
Move to the next islandComplete current NPC/boss chain
Finish late gameRequired setup catches and boss trophies
Unlock I am speedBuy the best engine / Dual Motors

This distinction matters in co-op too. A shared faster boat saves the group time, but the team still needs the same quest item and encounter chain.

Which boat mistakes waste the most money?

The largest mistake is treating every visible upgrade as mandatory. The second is selling a quest trophy because it looks like a normal catch. Buy against the next obstacle, preserve unique drops, and keep enough money for replacement bait or healing after a failed boss attempt.

  • Do not buy speed before the $10 Radar.
  • Do not confuse the handheld Radar with the mounted Boat Radar.
  • Do not sell the Spider Crab remains before the Boat Keys hand-in.
  • Do not buy Dual Motors while a lure or firearm still blocks the story.
  • Do not assume a fan guide’s landmark wording is exact after a patch.

The weapon ranking helps decide when damage should take priority over travel.

Where were the boat upgrades verified?

Official achievements verify both an engine upgrade and the best-engine objective. PC Gamer confirms the Boat Keys hand-in. Independent upgrade guides agree on the major prices and island sequence, while the conflicting shop landmark stays labeled Pending verification (待核实).

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