# Créditos e licenças / Credits and licences / Créditos y licencias

## pipeline-maintenance-2013.webp

- Author: Pfc. Roberto Villa Jr. / U.S. Marine Corps
- Date: 2013-08-28
- Source: https://commons.wikimedia.org/wiki/File:Environet_Repairs_Pipeline_130828-M-BN443-034.jpg
- Licence: Public domain (U.S. federal government official-duty work) — https://commons.wikimedia.org/wiki/Template:PD-USGov-Military-Marines
- Alterations: Resized, converted to WebP; uncropped.

**PT:** Manutenção de tubulação em Kaneohe Bay, Havaí (2013): a intervenção descrita na fonte envolve limpeza da junta e substituição de ânodo anticorrosivo. Foto de arquivo: Pfc. Roberto Villa Jr./U.S. Marine Corps, domínio público. Não representa uma obra brasileira nem a chapa do exercício.

**EN:** Pipeline maintenance at Kaneohe Bay, Hawaii (2013): the source describes joint cleaning and replacement of a corrosion-protection anode. Archive photo: Pfc. Roberto Villa Jr./U.S. Marine Corps, public domain. Neither a Brazilian project nor the exercise plate is depicted.

**ES:** Mantenimiento de tubería en Kaneohe Bay, Hawái (2013): la fuente describe limpieza de la unión y sustitución de un ánodo anticorrosivo. Foto de archivo: Pfc. Roberto Villa Jr./U.S. Marine Corps, dominio público. No representa una obra brasileña ni la chapa del ejercicio.

## boat-hardware-2025.webp

- Author: PattayaPatrol
- Date: 2025-08-05
- Source: https://commons.wikimedia.org/wiki/File:DFC_1141_Close-up_of_a_weathered_blue_cleat_with_a_rusted_metal_ring_and_frayed_rope_on_an_old_boat_sunlit_and_textured.jpg
- Licence: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/
- Alterations: Resized, converted to WebP; uncropped. This derivative remains CC BY-SA 4.0.

**PT:** Ferragem de amarração com corrosão visível em embarcação (2025). Foto de arquivo: PattayaPatrol/Wikimedia Commons, CC BY-SA 4.0; redimensionada e convertida para WebP, sem recorte. A imagem não permite determinar capacidade resistente nem representa uma estrutura brasileira.

**EN:** Boat mooring hardware with visible corrosion (2025). Archive photo: PattayaPatrol/Wikimedia Commons, CC BY-SA 4.0; resized and converted to WebP without cropping. The image does not establish load capacity and does not depict a Brazilian structure.

**ES:** Herraje de amarre con corrosión visible en una embarcación (2025). Foto de archivo: PattayaPatrol/Wikimedia Commons, CC BY-SA 4.0; redimensionada y convertida a WebP sin recorte. La imagen no permite determinar capacidad resistente ni representa una estructura brasileña.

## OG adaptations

og-pt.jpg, og-en.jpg and og-es.jpg use the PattayaPatrol photograph, cropped to 1200×630 with a dark overlay and localized title. Photo and these adaptations: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/). Credit: PattayaPatrol (2025), via Wikimedia Commons. This licence applies to those image adaptations, not automatically to independent article text or other assets.

## Diagrams and supplied originals

Five supplied Portuguese PNGs are preserved byte-for-byte in originals/. Published PT/EN/ES diagrams are redrawn for readability. The category chart uses equal-width qualitative cards because the original bar lengths could suggest numerical ratios that are not presented by the diagram. No local corrosion rate or linear service-life prediction is inferred from ISO 9223. The 0.20 mm/year value is fictional; the thickness illustration assumes loss on ONE face.