MARINE · SPECIALTY · FIXED BY STEP 01

One Mob Line Never Covered Three Barge Tows

You mobilized the spread three times on a job you bid one mobilization for, and the second and third came out of your margin.

WHY IT IS A MARINE PROBLEM

A shoreside trade remobilizes by driving the truck back, burning fuel and a couple of hours of drive time. A marine remobilization is itself a marine operation with a crew, a weather window, and tow time, and it spends real money before anybody picks up a tool. The interruption is the same on both jobs, and the two price tags aren't close.

WHAT IT COSTS

The size of it

A coastal remobilization runs $15,000 to $60,000 in tow, fuel, crew, and standby. Two unplanned ones will wipe out the profit on a job that was priced to make money.

OVERHEAD AT $1M–$5M

15%

CFOS target 14% for marine.

GROSS MARGIN AT $1M–$5M

22%

CFOS target 24% for marine.

NET PROFIT AT $1M–$5M

CFOS target 10% for marine.

Marine scope is naturally discontinuous. You drive pile, leave while somebody else builds topside, come back for decking and hardware, and come back a third time for punch. Each return moves a tug, a spud barge, a crane barge, a material barge, and a workboat, sometimes a tow of a day or more each way, plus launch and ramp fees, crew travel, and per diem. The GC sequences those returns around the GC's schedule, and your bid form carries one mobilization line because that's how the form was printed.

WHAT TO DO

Three moves, in order

STEP 01

Split the mobilization line into mob, demob, and per return remob, and put a unit price on the remob in your proposal so return trips have a rate.

STEP 02

Code every tow, launch fee, and standby day to the specific trip number, so the third mob reads as its own line and not as a bad labor month.

STEP 03

Ask for the topside sequence in writing before you price, count the returns it implies, and price that count.

THE FIX

Step 01: Job cost structure

Seven cost categories and three levels of granularity, built so the estimate and the ledger use the same words.

CFOS-01 · CHAPTER 1

Job cost codes that match how you bid the work

What this step changes, what it depends on, and how to tell it's installed.

BENCHMARKS

Marine by revenue band

Every one of the 7 bands carries the CFOS target beside the published figure.

ACROSS EVERY TRADE

Cost codes the field ignores

You have 200 cost codes. The crews use four of them, and one is called Miscellaneous.

SAME TRADE

What else costs marine contractors money

MARINE · CFOS-02

The Mill Rolling Schedule Owns Your Barge Date

The mill gave you a November rolling slot and the barge is booked for September. Nobody at the mill pays for the six weeks your spread sits.

MARINE · CFOS-06

Corps Permit Conditions Hit After Your Price Is Locked

You signed in March and couldn't put a hammer in the water until October, and the permit that held you up belongs to the owner.

MARINE · CFOS-04

You Buy Pile by the Ton and Bill It by the Foot

Every cutoff on the barge is footage you already paid for and will never invoice. The same mismatch runs backwards on dredging.

MARINE · CFOS-07

Retention Releases on a Survey You Never Ordered

Ten percent of your scope sits behind a hydrographic survey the owner commissions and a mitigation report your crew has no control over.

MARINE · CFOS-03

The USL&H Audit Reopens a Year You Already Closed

The comp audit came back for forty grand you never saw coming, against a year that was already booked as profitable.

SAME MECHANISM, OTHER TRADES

The same mechanism in other trades

CIVIL

Four mobilizations, one mob line item

You clear and grub in month one, come back for wet utilities, come back again for paving subgrade at closeout, and the contract still carries one mobilization line.

CONCRETE

Six Trips Back for Pads and Sidewalks, One Unit Price

You were first on the site and you're still coming back for stairs, pads, curbs, and exterior flatwork, all priced inside a per-yard number that assumed you never left.

DRYWALL

You Go Back Six Times And Nobody Signs A Ticket

You hung the corridor in March and you're still sending a guy back in June, one hole at a time, on somebody else's dime.

QUESTIONS

What marine owners ask

How to price multiple barge mobilizations on one job?

You mobilized the spread three times on a job you bid one mobilization for, and the second and third came out of your margin.

What does it cost?

A coastal remobilization runs $15,000 to $60,000 in tow, fuel, crew, and standby. Two unplanned ones will wipe out the profit on a job that was priced to make money.

What do I do first?

Split the mobilization line into mob, demob, and per return remob, and put a unit price on the remob in your proposal so return trips have a rate.

What are marine contractors supposed to be making?

Marine runs 22% gross margin, 15% overhead and 7% net profit before taxes at $1M–$5M. The all-trade average is 7%, so this trade sits right on it. The CFOS target is 10%.

Which part of the system fixes it?

The step is number 01, job cost structure. Seven cost categories and three levels of granularity, built so the estimate and the ledger use the same words. It comes from chapter 1 of CONTROL: The Construction Financial Operating System.

AUTHOR

JOSH LUEBKER

MASTER ELECTRICIAN · 150+ PROJECTS · $2.1B+ MANAGED

Josh Luebker ran commercial construction projects before he ran the numbers behind them, on data centres, military bases, hospitals, and high-rises. He wrote CONTROL: The Construction Financial Operating System, which is an eight-step framework for commercial subcontractors, and it publishes on October 1, 2026. He is a master electrician who moved into the office and kept the field vocabulary.

Sulphur Prairie Operations LLC maintains the benchmark reference behind these figures. Every edition is reconciled against the newest CFMA survey release before it publishes here. Where a figure changes between editions, the older edition keeps its year in the title so a citation to it stays correct.