GPS Marine Charts App offers access to charts covering Portugal waters (derived from IHP ( Instituto Hidrográfico of Portugal)data).
Only marine GPS app to have route assistance with Voice Prompts for marine navigation. It has route manager to create new boating routes or import existing GPX/KML routes. It supports Nautical Charts course up orientation.
Please visit
http://gpsnauticalcharts.com/main/portugal/all-all-portugal-charts-nautical-charts-folio.html
for complete list. If you don't find the chart for Portugal , please contact us at support at gpsnauticalcharts.com.

* Voice Prompts for marine navigation (requires GPS )
-prompts when approaching a boating route marker
-Continous distance and ETA updates
-Alerts when sailing/boating off route
-Alerts when boating in wrong direction

*Route Editing/Creation
-Create routes from scratch
-Edit existing GPX/KML routes.
-Add custom description to any route point.
-Drop markers along route.

* Offline charts derived from IHM data.
-Visually draw area to download
-Textual search
-Catalog
-Charts reprojected for WGS84 datum

*Seamless chart quilting of marine charts
*Distance Bearing tool
*Create custom way points
- Using GPS
-Select point on map
-Manually enter latitude & longitude coordinates

*POI layer for marine charts
- Overlay POIs
- POI list derived from the equivalent ENC and contains all categories including Buoy, Light, Harbour facility, Obstr.

*Search POIs/Way points
*Pan/Zoom/My Location
* Record Marine GPS tracks
* View tracks overlay
* Live track animation
* Track analytics/stats

* Export GPX tracks.
-Export to SDCard
-Share GPX trakcs with friends.

* Auto Follow Mode (Course up)
-Continuously updates boat's location on chart
- Adjustable update frequency

Sample Nautical Charts
A Approaches to Aveiro
A Azinheira
A Figueria da Foz
Angra Do Heroismo
A Porto de Leixoes and Barra do Rio Douro
Approaches to Faro and Olhao
Approaches to Figueira da Foz
Approaches to Leixoes and Barra do Rio Douro
Approaches to Sines
Arquipelago dos Acores Central Group
A Sines
Baia de Mossamedes (Little Fish Bay)
Baia de Santa Maria
Baia de Santa Marta
Baia de Sao Lourenco
Baia do Dande
Baia dos Elefantes
Baia dos Tigres
Baia Farta
Bissau
B Montijo
B Porto de Aveiro
Cabo de Sao Sebastiao to Beira
Cabo de Sao Vicente to Faro
Cabo Mondego to Cabo Espichel
Canal Do Faial
Canal do Geba and Bissau
C Baia do Porto Santo
C Continuation to Aveiro
D Porto do Porto Santo
Enseada do Capulo
Enseada do Cuio
Entrance to Rio Tejo including Baia de Cascais
Funchal
Gunza-Kabolo (Novo Redondo)
Horta
Ilha de Santa Maria with Banco das Formigas
Ilha de Sao Miguel
Ilhas Flores and Corvo
Lajes
Lisboa Alcantara to Canal do Montijo
Lisboa Paco de Arcos to Terreiro do Trigo
Machico and Canical
Montedor to Cabo Mondego
Ponta Delgada
Ponta Gorda to Ponta de Sao Lourenco
Portimao
Porto Alexandre
Porto Amboim
Porto de Benguela
Porto de Luanda
Porto do Ambriz
Porto do Lobito
Porto N'zeto
Praia Da Vitoria
Santa Cruz
Setubal and Approaches
Setubal Carraca to Ilha do Cavalo
Viana Do Castelo
Viana do Castelo and Approaches
Vila Da Praia
Vila do Porto

PLEASE NOTE: Continued use of GPS running in the background can dramatically decrease battery life.