# DVL-75

The DVL-75 is designed for low-cost, medium accuracy measurement of the relative velocity between the sensor head and other objects. The system provides velocity outputs relative to the World Frame of reference and can estimate positions using dead reckoning.

This system is designed and priced for use by people who need to know generally where their ROV is located and/or want to hold a position in the face of currents or tether pull. It is not a survey-grade instrument.

<figure><img src="/files/2bK3evzMHKWIyzMBQEFC" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.ceruleansonar.com/c/dvl-75/dvl-75.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.