io.github.shipping-ship-it/laytime-calculator-pro

Calculate laytime, demurrage, and despatch for chartering workflows with AI.

Source

Official Registry

Updated

2026-06-15

// securityCaution

Remote endpoint· navitt-mcp.marine-356.workers.dev
Runs locally
Official / curated
Community-trusted

Running security audit…

Credentials
Network egress
Code execution
Data access
Supply chain

// install

Copy the install command and let the AI configure it · recommended for beginners

Please install the "io.github.shipping-ship-it/laytime-calculator-pro" MCP server from askskill:
Run: claude mcp add --transport http 'io-github-shipping-ship-it-laytime-calculator-pro' 'https://navitt-mcp.marine-356.workers.dev/mcp'

// examples

Calculate voyage demurrage

Prompt

Using the following charter party terms and port operation timestamps, calculate laytime used and demurrage for this voyage: loading allowed 5 days, discharge allowed 4 days, demurrage rate USD 18,000/day, despatch at half demurrage. Here are the NOR, all fast, commencement, stoppage, completion, and sailing times: [paste timeline]. Show the calculation steps, excepted periods, and final demurrage or despatch.

Expected

A step-by-step time breakdown, exception handling, and the final demurrage or despatch amount.

Review a laytime dispute

Prompt

I suspect the counterparty's laytime calculation is wrong. Please review it using these facts and charter terms: weather stoppages do not count, shifting time counts, lunch breaks do not count, and WWD SHEX applies. [paste clauses and event timeline]. Identify dispute points, alternative interpretations, and the cost result under each.

Expected

A dispute analysis with laytime results under different interpretations and a cost comparison.

Generate a settlement summary

Prompt

Turn this laytime calculation into a client-facing settlement summary, including key timestamps, allowed time, time used, time saved or exceeded, and the demurrage/despatch amount, written in a professional but concise tone. [paste calculation result]

Expected

A clear settlement summary ready to send or edit further.