COMPLETE GUIDE

How to Use
MarineGPT

Master MarineGPT's three AI personas and get the most from professional maritime intelligence

Getting Started

Five simple steps to maritime AI intelligence

1

Choose Your Persona

Start by selecting the mode that matches your need: Expert for complex analysis, Risk Analyst for quantitative risk, Copilot for quick tasks.

2

Ask Your Question

Type your question naturally. Include relevant context: vessel details, position, cargo, constraints.

3

Review the Response

MarineGPT provides structured, professional responses. Expert includes analysis and recommendations. Risk Analyst outputs institutional tables and distributions. Copilot answers directly.

4

Follow Up

Ask follow-up questions to go deeper, request clarification, or explore alternative scenarios. Your conversation context is maintained.

5

Switch Personas Anytime

Need different expertise? Switch personas anytime using the dropdown. Your conversation history stays accessible.

Master Each Persona

Detailed guides for Decision Engine, Risk Analyst, and Copilot modes

Decision Engine

7-Stage Maritime Decision System

This is not a chatbot. It is a maritime decision system — a 7-stage analytical pipeline that computes voyage economics, legal expected value, charter risk, CII ratings, and port distances before issuing a decisive, numbered directive. Every answer is backed by deterministic engines. Every recommendation has a hard trigger and a fallback.

Best For

  • Ship Owners and Operators Facing Commercial Decisions
  • Charterers Managing Disputes and Demurrage Claims
  • Port Managers Under Time Pressure
  • Maritime Lawyers and P&I Correspondents
  • Masters Facing Operational Crises

Pro Tips

  • Give it numbers: vessel type, DWT, hire rate, cargo, speed. The engines need inputs to compute.
  • Name the ports: the system has 150+ world ports with sea-route distances built in.
  • State the charter party form (NYPE 2015, Shellvoy 6, GENCON 1994) — the legal engine uses actual clauses.
  • Use it for crisis decisions: the more urgent the query, the more decisive the response.
  • Push back: ask 'What if bunker hits $700/MT?' — the sensitivity analysis will show the breakpoint.

Example Queries

  • "Calculate TCE: Rotterdam to Ras Tanura, 280,000 DWT VLCC, $8/MT freight, 250,000 MT crude, 12.5 knots"
  • "Demurrage claim: 72 hours excess laytime at $45,000/day rate. GENCON 1994. Is charterer liable?"
  • "CII rating for 12-year-old Aframax, 100,000 DWT, 8,500 MT/day VLSFO, 90,000 NM annual trading"
  • "Off-hire: 5 days engine breakdown, NYPE 2015, $32,000/day hire. Owner's liability? Calculate net exposure."
  • "Compare Suez vs Cape routing: Ras Tanura to Rotterdam, VLCC 300,000 DWT. Cost, days, canal fees."

Real-World Use Cases

Voyage Economics + Port Distance

You Ask:

"Calculate TCE for Rotterdam to Singapore at 14 knots, 75,000 MT grain, $35/MT freight, VLSFO $590/MT."

You Get:

Port Distance Engine fires: 7,949 NM via Suez. Voyage Economics Engine: TCE computed with full formula, break-even freight rate, bunker sensitivity (±$100/MT impact on TCE), Bull/Base/Bear cases. BOTTOM LINE: Accept or reject the fixture with a hard trigger.

Charter Party Dispute — Off-hire + Legal EV

You Ask:

"Vessel off-hire 7 days, hire $28,500/day, charterer claiming breakdown was owner's fault. NYPE 2015. Advise."

You Get:

Off-hire engine: net $196,750 owner exposure. Legal EV engine: pursue vs settle with win probability, claim vs arbitration cost, settlement floor. DECISION DIRECTIVE: File or settle — with the exact number that changes the answer.

Crisis — Vessel Arrested

You Ask:

"Ship arrested this morning. Mortgage default. Bank demanding repayment within 24 hours. What do we do?"

You Get:

CRISIS tier activated. IMMEDIATE ACTION in sentence one. Legal options ranked. Liquidity runway calculated. Escalation timeline with hard deadlines. Zero hedging — the directive is a decision, not a menu.

⚡Decision Engine Signature Capabilities

7-Stage Pipeline: Situation → Verified Data → Calculations → Root Cause → Scenarios → Risk Matrix → Decision Directive
Port Distance Engine: 150+ world ports, haversine waypoint routing, sea-route distances only
Voyage Economics Engine: TCE, gross revenue, bunker cost, port costs, break-even — all with sensitivity bands
Legal EV Engine: P(win) × (Claim − Cost) − P(lose) × Cost — pursue vs settle in one number
Off-hire, Laytime, Deviation, Performance Claim — all with charter party clause citations
CII Engine: Attained gCO₂/dwt·nm → Rating A–E → corrective action required
Crisis Tier: Activated automatically on time-pressure queries. One directive. Zero options menu.

Pro Tips for All Personas

Universal best practices for getting the most from MarineGPT

Be Specific

Provide context: vessel type, position, cargo, weather, constraints. Specific questions get specific answers.

Use Natural Language

Talk like you would to a colleague. No special commands needed. Just ask your question naturally.

Ask Follow-ups

MarineGPT remembers your conversation. Ask follow-up questions to go deeper or clarify.

Request Analysis

Don't just ask for data—ask for analysis, comparison, risk assessment, commercial implications.

Verify Critical Decisions

For safety-critical or legal decisions, verify with official sources. MarineGPT is intelligent guidance, not regulatory authority.

Explore Scenarios

Ask "What if...?" questions. Explore different scenarios to understand implications before making decisions.

Ready to
Experience Maritime AI?

Start using MarineGPT now. No signup required. Choose your persona and ask your first question.