viviwang/MARINER

---
license: mit
task_categories:
- object-detection
tags:
- ship
- maritime
- military
size_categories:
- 1K<n<10K
---

# MARINER

A maritime ship object detection dataset with 63 fine-grained ship categories.

## Dataset Structure

```
test/
├── test.json # Bounding box annotations
├── *.jpg # Images (1000 total)
```

## Annotation Format

Each entry in `test.json`:

```json
{
"image_name": "054A_109.jpg",
"grounding_info": {
"text_prompt": "ship .",
"objects": [
{
"label": "054A",
"score": 0.9291,
"box_norm": [x_min, y_min, x_max, y_max],
"box_pixel": [x_min, y_min, x_max, y_max]
}
]
}
}
```

- `box_norm`: normalized bounding box coordinates [0, 1]
- `box_pixel`: pixel-level bounding box coordinates

## Categories (63 classes)

054A, Admiral_Gorshkov, Arleighburke, Asagiri, Atago, Austin, Barge, Bitumen, Blueridge, Bulk_carrier, Cavour, Charles_de_Gaulle, Chemical_tanker, Container_ship, Cruise, Enterprise, Epf, Firefighting, Fishing_ships, Fpso, Freedom_class_lcs, Fujian, General_cargo_ship, Hatsuyuki, Heavy_load_carrier, Hovercraft, Hyuga, INS_Vikrant, Icebreaker, Incheon, Independent_class_lcs, Kayak, Kirov, La_Fayette, Liaoning, Lng_tanker, Lpg_tanker, Medicalship, Monohull_sailboat, Nimitz, Oil_products_tanker, Osumi, Others, Passenger_cargo_ship, Passenger_ro-ro_ship, Passenger_ship, Queen_Elizabeth, R33_INS_Vikramaditya, Reefer, Sailing_catamaran, Sailing_trimaran, Sanantonio, Scientific_research_ship, Shandong, Slava, Tarawa, Ticonderoga, Tugboat, Usv, Vehicles_carrier, Wasp, Yuting, Yuzhao

## Statistics

- **Split**: test
- **Images**: 1000
- **Categories**: 63