A tried and tested replacement for parallel rules, particularly in smaller boats which may be pitching and rolling heavily. The Portland Plotter enables fast, efficient and accurate chart plotting in adverse conditions.
- Used worldwide by practical and shore-based instructors.
- Bright blue directional arrow prevents accidental reciprocal bearings.
- Edges are graduated for tide and boat speed.
- The base has a fixed grid so it is easy to plot latitude from your GPS system.
- Comprehensive instructions included.
- Sold in: Each.
.jpg)
