Exam Prep
3 Tools
Exam Prep Hub
All exam preparation resources in one place. Start here if you're getting ready for your tickets.
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3.xu Lite / Exam-lite
Quick-fire practice questions and lightweight exam prep for your 3.xu qualifications.
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3.1U · 3.2U · 3.4U Mock Exams
Full mock exams for your 3.1U, 3.2U, and 3.4U. Available inside the community.
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Calculators
9 Tools
Calculators Hub
All calculators in one place — dive physics, gas, pay, and more.
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Salary Calculator
Work out your offshore earnings based on day rate and rotation.
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ODIA Pay Rates
Current ODIA reference pay rates for offshore diving roles.
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Buoyancy Calculator
Calculate buoyancy for objects and structures underwater.
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Boyle's Law
Pressure and volume relationships for dive planning and exams.
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Dalton's Law
Partial pressure calculator for mixed gas diving.
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Gas Consumption
Commercial diving gas consumption calculator.
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Chamber Pressurisation
Calculate chamber pressurisation rates and gas requirements.
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Chamber Gas Addition
Gas addition calculations for chamber operations.
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Subsea Leaks Calculator
Calculate subsea leak rates and flow data.
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Course Cost Planner
Plan and estimate the total cost of your diving course journey.
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Training & Learning
5 Resources
ACFM Explainer
Alternating Current Field Measurement — what it is, how it works, what you need to know as an inspector.
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Nexus Training Module 1
Nexus inspection training — module one.
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Nexus Training Module 2
Nexus inspection training — module two.
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Diver Kit List
What you actually need to pack for offshore diving work — no fluff.
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Diver Competency
Competency framework and guidance for offshore divers.
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Fatalities Database
Commercial diving fatalities — learning from what's gone wrong offshore.
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Podcast
Listen Free
Spotify
Beyond the Surface — Offshore Careers and Real Talk with Stu Sutcliffe.
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Apple Podcasts
Available on Apple Podcasts — subscribe to get every episode.
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YouTube
Watch episodes and short-form content on the Beyond the Surface YouTube channel.
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Blog
Articles, guides, and real talk about offshore careers — all in writing.
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