---
title: "Get Offshore Backscatter Polygons & Data queryables"
method: GET
path: "/collections/offshorebackscatterareas/queryables"
tags: ["offshorebackscatterareas"]
---

# Get Offshore Backscatter Polygons & Data queryables

`GET /collections/offshorebackscatterareas/queryables`

This layer shows the location and basic information for bathymetric surveys containing backscatter data. A zip file of the backscatter image files (e.g. geotiffs) for the survey can be downloaded using the URL link provided. Note that there can be more than one polygon per survey and these will link to the same zip file for the entire survey. For access to the data underlying the images please contact Marine Enquiries (offshoredata@bgs.ac.uk). The majority of the data were collected and processed for the Maritime and Coastguard Agency (MCA) under the Civil Hydrography Programme. If further processing is required, BGS can provide a quote. To download the related bathymetry data go to the Admiralty Marine Data Portal - https://data.admiralty.co.uk/portal/apps/sites/#/marine-data-portal.

## Query parameters

- `properties` string[]
- `f` 'json' | 'html' | 'jsonld'
- `profile` 'actual-domain' | 'valid-domain'
- `lang` 'en-US'

## Response `200`

successful queryables operation

- Queryables
  - `queryables` Queryable[], required
    - `description` string — a human-readable narrative describing the queryable
    - `language` string — the language used for the title and description
    - `queryable` string, required — the token that may be used in a CQL predicate
    - `title` string — a human readable title for the queryable
    - `type` string, required — the data type of the queryable
    - `type-ref` string, url — a reference to the formal definition of the type

## Other responses

- `400` — unresolved $ref
- `404` — unresolved $ref
- `500` — unresolved $ref

---

[API](https://skmtc.dev/bgs/apis/opengeoscience-ogcapi.md) · [All operations](https://skmtc.dev/bgs/apis/opengeoscience-ogcapi/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/bgs/opengeoscience-ogcapi/revisions/98c98c759f90/schema)