Revamped Fishing Mapping App ‘TsuriDoko’ Enhances Angler Experience

On October 24, 2025, Asia Aerospace Co., Ltd. announced a major update for its popular web app, ‘TsuriDoko.’ Tailored for fishing enthusiasts, this revamped application offers advanced functionality designed to improve the fishing experience. With over 83,000 registered users since its launch six years ago, TsuriDoko has become a vital tool for anglers, providing detailed underwater topographic maps created using airborne laser survey technology.

Key Features of the Revamped TsuriDoko App

Full-Screen Display

The most notable improvement in this update is the full-screen display option, enhancing the visibility of detailed underwater terrain. Previously limited to a portion of the screen, users can now enjoy an expansive view of the maps, making navigation and data interpretation easier.

Expansion of Information Available

Additionally, TsuriDoko has expanded the types of information available on its maps. Users can access not only fishing catch data but also relevant information regarding fishing spots, significantly increasing the convenience and usability of the app.

New Measurement and Wind Mapping Functionality

A highly requested feature, the distance measurement tool, has been added, allowing users to gauge distances right on the map. Furthermore, a wind condition map has been introduced as a premium feature, providing crucial data that can aid anglers in planning their fishing trips.

New Area Added: Enoshima Offshore Terrain Map

Responding to user demands, TsuriDoko has also released details of the underwater terrain beyond Enoshima, including sandy areas and rocky reefs that are vital for fishing enthusiasts navigating the waters.

Full Renewal Experience

This update is described as a ‘full renewal’ of the TsuriDoko app, bringing numerous new features that make it even more comprehensive compared to previous versions. Users are encouraged to visit the TsuriDoko site and experience these enhancements firsthand.

What is TsuriDoko?

TsuriDoko is a web app that allows users to view highly detailed underwater topographic maps (bathymetric maps) obtained through the Airborne Lidar Bathymetry system. Users can not only predict fish locations based on underwater terrain data but also log their catches, view other anglers' catches, and check information about fishing locations.

As of October 2025, the app features a comprehensive dataset of underwater terrain for certain areas, including:

- Tokyo: Izu Oshima, Niijima, Kozushima, Shikinejima, Mikurajima, Hachijo-jima.
- Kanagawa: Miura Peninsula's west coast, Enoshima, Eboshiiwa, Manazuru Peninsula.
- Shizuoka: Izu Peninsula, including Hatojima and Mikomoto Island.
- Wakayama: Kada and Tomogashima, Shirahama's Hiki River mouth.
- Okinawa: Surrounding Kohama Island.

Bathymetric Data Characteristics

The underwater terrain maps are created based on point cloud data obtained from highly advanced green laser bathymetry systems. The mapping achieves a depth resolution of at least one point per square meter in water and ten points per square meter in dry land areas, ensuring an accuracy rate of less than ±15cm.

Basic Information

- Application Name: TsuriDoko
- Service Launch Date: October 25, 2019
- New Version Launch Date: October 24, 2025
- Cost: Free (with in-app purchases)
- Website: https://turidoco.com/
- Supported Browsers: Safari 18 and later, Chrome ver.139 and later as of October 2025.

TsuriDoko aims to make fishing even more enjoyable through accurate underwater mapping!

About Asia Aerospace Co., Ltd.

Established in 1954, Asia Aerospace is a leader in aerial surveying with its own fleet of aircraft, employing cutting-edge measurement and analysis technologies, such as AI, for a wide range of applications including national land preservation, social infrastructure management, and administrative support. They are also quick to respond to large-scale disasters, undertaking aerial photography and site surveys to report damage using their proprietary technologies. For further inquiries, please contact their Marine Innovation office via email at [email protected].