The calculators and testing tools available on this website (www.ceinspector.com) are provided by Blue Peter Marine as convenience tools to assist marine professionals in their preliminary calculations and assessments.
These tools are NOT part of the International Marine Certification Institute (IMCI) assessment system and are NOT endorsed or verified by IMCI.
These tools are provided "as is" without warranty of any kind, either expressed or implied. While every effort has been made to ensure accuracy, Blue Peter Marine makes no guarantees regarding the correctness, completeness, or reliability of the calculations or results generated by these tools.
Users are solely responsible for verifying all calculations and results independently before using them for any certification, compliance, or construction purposes. Blue Peter Marine explicitly declines any and all responsibility for errors, omissions, or inaccuracies in these tools, and shall not be held liable for any damages, losses, or consequences arising from the use or misuse of these calculators.
All certification decisions must be made by qualified professionals using approved methodologies and verification processes. These tools are intended as aids only and do not replace professional engineering judgment, official testing procedures, or formal certification processes.
By closing this disclaimer, you acknowledge that you have read and understood these terms.
Professional calculation tool for marine electrical installations
Launch CalculatorThe ISO 13297:2021 calculator is a comprehensive tool designed for yacht builders, marine electricians, and surveyors to ensure electrical installations comply with international standards. This free tool helps you calculate voltage drop, determine proper conductor sizing, and verify ampacity ratings for marine electrical systems.
Calculate voltage drop for DC and AC systems. Automatically verifies compliance with 3% and 10% limits for critical and general circuits.
Complete conductor ampacity tables from ISO 13297 Table A.1, with temperature ratings from 60°C to 200°C and derating factors.
Create and manage conductor lists for entire vessels. Track hundreds of circuits with custom names and specifications.
Export to Excel with auto-formatted columns or CSV. Save your work and reload it anytime with browser storage.
This calculator is provided as a design aid and educational tool. It does not replace professional certification or survey services. All calculations should be verified by a qualified marine surveyor or notified body before implementation.
ISO 13297:2021 specifies requirements for the design, installation, and testing of alternating current (AC) and direct current (DC) electrical systems on small craft up to 24 meters length of hull (LH).
Design compliant electrical systems during the build process. Create documentation for CE certification and regulatory approval.
Verify conductor sizing and voltage drop for new installations or retrofits. Ensure all circuits meet ISO 13297 requirements.
Quickly verify electrical installation compliance during surveys. Generate professional reports with calculated values.
Integrate electrical system calculations into vessel design. Ensure specifications meet regulatory requirements.
While this calculator helps with design and verification, professional CE certification requires assessment by a notified body.
Blue Peter Marine provides comprehensive marine certification services including: