South Carolina Marine

South Carolina Marine Contractor Exam: Complete Study Guide (2026)

If you're working toward a South Carolina marine contractor license, the Marine exam is the main hurdle standing between you and the authority to build docks, piers, seawalls, bulkheads, and wharves across the state. This guide covers everything you need to know: exam format, topic breakdown, sample questions, approved references, and straight-talk study advice. Whether you're taking it for the first time or coming back after a setback, here's what actually matters.

Start by getting a feel for the format — take our free practice exam and see where you stand.

South Carolina Marine Exam Overview

The South Carolina marine contractor exam is administered by PSI and consists of 50 scored questions. You get 180 minutes (3 hours) to complete it. The passing score is 70%, which means you need to answer at least 35 of 50 questions correctly.

This is an open-book exam. You can bring the approved reference books, and they may be highlighted, underlined, and tabbed — but no loose papers stuffed inside, and no handwritten notes beyond that. Knowing where to look quickly matters almost as much as knowing the material.

The exam fee is $64. You register through PSI — either online at the exam registration page (available 24/7), by phone at (855) 340-3701, by fax, or by mail. You'll need a valid credit card for phone registration.

Note: Passing the Marine exam alone isn't enough. All Marine Commercial Contractor candidates must also pass the Business Management and Law for Contractors Examination. Check the official exam bulletin and the state licensing website for full licensing requirements.

What a South Carolina Marine Contractor License Covers

This license authorizes work on marine and waterfront structures — seawalls, bulkheads, docks, piers, wharves, boat slips, boardwalks, and related pile driving, fill, and grading work. It does not cover residential buildings or general land-based construction. Know the scope before you commit to this path.

Topics Covered on the SC Marine Construction License Exam

The exam tests four content areas. Here's the breakdown — study time should follow these weights.

Miscellaneous Engineering – Pile Driving (25 of 50 items)

This is half the exam. It covers pile types (timber, concrete, steel, sheet piles), load transfer mechanisms (friction vs. end-bearing), hammer types (single-acting, double-acting, diesel, hydraulic, vibratory), the Engineering News pile formula, and support systems like fixed leads, swing leads, and batter piles. If you're short on time, this is where you put in the most hours.

Concrete (15 of 50 items)

Thirty percent of the exam. Mix design, water-cementitious materials ratio, workability, slump, air content, batching, transporting, placement, formwork, subgrade prep, and curing. Fresh concrete properties get tested regularly here.

Safety – Marine (6 of 50 items)

Covers OSHA 1926 Subpart O — marine operations, floating cranes, crane stability on barges, hoisting personnel over water, cofferdam requirements (controlled flooding, guardrails, evacuation warnings), and caisson procedures including compressed-air medical requirements and decompression. Six questions, but failing to study safety is how people miss points they shouldn't.

Concrete – Reinforcing Steel (4 of 50 items)

Rebar grades, ASTM specs, bar identification markings, concrete cover requirements, placement tolerances, and splice types (lap, mechanical, welded). Four questions — targeted and specific.

Sample Questions from the South Carolina Pile Driving Exam

Here are five sample questions representative of what you'll see. Work through them — then check how you did on our free practice exam.

Question 1 — Concrete (Easy)

A steel-troweled concrete surface resists abrasion better than a surface that has not been troweled.

No answer choices on this one — it's a true/false style judgment call. You need to know your surface finishing principles cold.

Question 2 — Concrete (Medium)

When supplementary cementitious materials are used in concrete exposed to deicing chemicals, what is the maximum allowable dosage of fly ash by mass of total cementing materials?

A) 25%
B) 10%
C) 35%
D) 50%

This tests specific mix design limits under exposure conditions. Do you know the right number?

Question 3 — Pile Driving (Medium)

A contractor is planning a mass diagram for a marine embankment project. A balance line is a horizontal line on the mass diagram whose length equals what value?

A) Minimum haul distance permitted
B) Average haul distance for all machines
C) Maximum economical haul distance
D) Total length of the project

Mass diagrams show up on the South Carolina pile driving exam more than people expect. Know what each element of the diagram represents.

Question 4 — Pile Driving (Medium)

You are a marine contractor planning vertical excavation inside a sheet-pile cofferdam. The excavation must reach 50 feet below the crane's position. Which excavator configuration is required for this application?

A) Dragline with extended boom and fairlead
B) Front shovel with extended dipper stick
C) Lattice-boom crane with cable-attached clamshell bucket
D) Hydraulic hoe with clamshell bucket on the stick

This is equipment selection under real job conditions. You need to know what each machine can actually do.

Question 5 — Safety – Marine (Medium)

Max extinguisher distance for Class A hazards:

A) 25 ft
B) 50 ft
C) 75 ft
D) 100 ft

Straight OSHA recall. If you've tabbed your CFR 1926 properly, you can find this in seconds.

Don't guess — go take our free practice exam and see how you actually do.

What Types of Questions to Expect

Here's what our practice question bank covers, by topic — and what kinds of problems each area throws at you.

Safety – Marine — 37 practice questions covering OSHA 1926 Subpart O rules for marine operations, barge crane stability calculations, cofferdam flooding procedures, evacuation requirements, and caisson compressed-air medical standards.

Miscellaneous Engineering – Pile Driving — 125 practice questions. Expect calculations using the Engineering News formula, equipment selection scenarios (which hammer for which soil?), pile type comparisons, and layout problems involving leads, templates, and batter angles. The variety here reflects how broad this topic actually is.

Concrete — 89 practice questions covering water-to-cement ratio calculations, slump and workability interpretation, admixture selection, placement sequencing, curing duration requirements, and mix proportioning problems.

Concrete – Reinforcing Steel — 18 practice questions on ASTM rebar designations, cover requirements by structural member, placement tolerances, and the differences between lap, mechanical, and welded splices.

Total across all topics: 269 practice questions available in our full practice exam pool.

Approved Study Materials for the SC Marine Contractor Practice Test

These are the references allowed in the exam room. Get them, tab them, know them.

OSHA 29 CFR 1926 — OSHA Standards for the Construction Industry
Your safety bible. Every marine safety question on the exam traces back to this document. Tab Subpart O specifically, plus relevant sections on cranes, cofferdams, and fire protection.

Construction Planning, Equipment, and Methods (9th Edition)
This is where pile driving lives. Mass diagrams, excavation equipment, hammer selection, and production calculations are all here. The pile driving section alone covers a huge portion of the exam.

Design and Control of Concrete Mixtures (16th Edition)
The go-to reference for mix design, fresh concrete properties, curing requirements, and admixture dosage limits. The fly ash question above? It's in here.

Placing Reinforcing Bars, Recommended Practices (10th Edition, 2022)
Covers everything on the reinforcing steel section — bar identification, cover, tolerances, and splice types. Small topic on the exam, but easy points if you've read this.

SC 811 Excavator Manual (2024)
South Carolina's utility excavation safety requirements. Required reference for the exam — know the basic excavation notification rules.

Study Tips for the South Carolina Marine Contractor Exam

Put your time where the points are. Pile Driving is 25 questions. Concrete is 15. Those two topics together are 80% of the exam. Master them first, then fill in Safety and Reinforcing Steel.

Tab your books before exam day. Open book means nothing if you can't find the answer in 90 seconds. Create tabs by chapter and topic. Practice looking things up under time pressure.

Practice under real conditions. Our full SC marine contractor practice test matches the real exam — 50 questions, 180-minute time limit, same topic breakdown. PDFs and flashcards help you learn; timed practice tells you if you're ready. The goal is to consistently score above 70% before you walk into the test center.

Read every answer choice before you commit. An answer can be factually true but still not answer the question that was asked. When two options both sound right, re-read the question and pick the one that directly answers it — not just the one that sounds familiar.

Retake attempts are limited. You can take the exam twice in a 12-month period. After that, only once every six months. Don't treat the first attempt as a scouting trip.

Frequently Asked Questions

How much does the South Carolina Marine contractor exam cost?
The exam fee is $64. Register through PSI at the exam registration page.

How many questions are on the exam and how long do I have?
Fifty scored questions. You have 3 hours (180 minutes) to complete it.

What's the passing score?
You need 35 out of 50 correct — that's 70%.

What topics does the exam cover?
Four areas: Safety – Marine (6 items), Miscellaneous Engineering – Pile Driving (25 items), Concrete (15 items), and Concrete – Reinforcing Steel (4 items).

Do I need to pass anything else besides the Marine exam?
Yes. All Marine Commercial Contractor applicants must also pass the Business Management and Law for Contractors Examination. Check the state licensing website for full details.

Is the exam open book?
Yes. You may bring the approved references. Highlighting, underlining, and tabbing are allowed. No loose papers, no additional notes attached or inserted.

What reference books are allowed?
OSHA 29 CFR 1926, Construction Planning Equipment and Methods (8th Edition per the bulletin), Design and Control of Concrete Mixtures (15th Edition per the bulletin), Placing Reinforcing Bars Recommended Practices (10th Edition, 2019 or later), and the South Carolina 811 Excavator Manual (latest edition). See the official exam bulletin for the exact editions required.

How many times can I retake it if I fail?
Twice within any 12-month period. After that, once every six months.

How do I register?
Online at the exam registration page (24/7), by phone at (855) 340-3701 (Mon–Fri 7:30 am–10:00 pm ET, Sat–Sun 9:00 am–5:30 pm ET), by fax, or by mail. Phone registration requires a valid credit card.

What ID do I need at the test center?
One valid, non-expired, government-issued photo ID — state driver's license, state ID, U.S. passport, U.S. military ID, U.S. Alien Registration Card, or Canadian government-issued ID. The name must match your registration exactly.

Ready to Get Started?

You now have a clear picture of what the South Carolina marine contractor exam covers, how it's structured, and what to study first. The exam is achievable — 50 questions, open book, and a 70% passing threshold — but only if you put in focused preparation on the right material.

Start today. Take our free practice exam — 10 questions, no account needed, no payment required. See how you do, then decide if you want the full 269-question practice bank to sharpen your weak areas before exam day.