Underwater Drone Break-Even Analysis: $55K Monthly Revenue Target

Fixed costs $39.1K/mo Payroll plus overhead

Contribution margin 71% After variable costs

Break-even revenue $55.1K/mo Monthly target

Break-even timing Month 14 Ramp to break-even

Break-even calculator

Test monthly revenue, direct project costs, and fixed overhead for an underwater drone service.

Lean Base Full

Monthly revenue Use this for monthly service sales from inspections, surveys, filming, and monitoring. $ Slow month Peak month Variable expenses Use direct costs that rise with project volume, like mobilization, maintenance, sales, and software. $ Light costs Heavy costs

Money available to cover fixed costs $82,720 $112,000 revenue - $29,280 variable expenses

Margin ratio

74%

Covers fixed costs

Yes

Fixed monthly costs Use the monthly payroll and overhead the business must cover even in a slow month. $ Lean overhead Higher overhead

Break-even chart Revenue Total costs

Which expenses are fixed, and which move with sales in an underwater drone exploration service?

Cost classification

Break-even is reliable only when fixed overhead stays fixed and revenue-linked items move with sales. Here’s the quick math: first-year core payroll is $395,000 per year, or about $32,900 per month.

Expense	Cost	Break-Even Treatment	Common Mistake
Core payroll: CEO, lead ROV pilot, data analyst, and sales role	Fixed	Model as recurring monthly overhead in the first year; $395,000 per year equals about $32,900 per month.	Treating salaried roles as per-project labor.
Office rent, insurance, utilities, admin software, legal, supplies, IT, and vehicle lease	Fixed	Carry as stable overhead from Month 1 through Month 60; total monthly amount is $6,200.	Using annual amounts as monthly inputs.
Operational and mobilization expenses	Variable	Apply as a revenue-linked charge: 12% in the first year, declining to 8% by Year 5.	Holding mobilization flat as jobs grow.
Project-specific equipment maintenance	Variable	Apply against revenue: 5% in the first year, declining to 3% by Year 5.	Burying project wear inside fixed overhead.
Marketing and sales expenses	Variable	Model as sales-linked spend: 8% of revenue in the first year, declining to 4% by Year 5.	Double-counting percentage spend and CAC planning.
Project data analysis software licenses	Variable	Apply as usage-linked software expense: 4% of revenue in the first year, declining to 2% by Year 5.	Mixing project software with admin subscriptions.
Vessel access billed per mission plus standby time	Semi-variable	Split the base standby portion from the mission-linked usage portion before calculating contribution margin.	Treating the full vessel charge as fixed.
Added ROV pilots and backup operating capacity	Semi-fixed	Add in steps when capacity expands, such as the ROV Pilot from Month 13 and added pilot coverage in later years.	Smoothing step hires across every job.

How does break-even change from a lean launch to a base plan and fuller Year 2 setup?

Scenario table

If you're planning this underwater drone service, break-even moves fast when payroll and marketing change. Lean costs need about $551K a month, the base plan about $586K, and the fuller Year 2 setup about $714K because fixed costs rise faster than the margin helps.

Planning assumptions only; actual results will vary with job mix, pricing, and field costs.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch	$551K	$160K	$391K	71%	$0	Near break-even; small cost swings matter.
Base plan	$586K	$170K	$416K	71%	$0	Added marketing lifts the revenue target.
Fuller Year 2 case	$714K	$186K	$529K	74%	$0	Lower variable load helps, but payroll keeps the bar high.

What breaks the break-even plan for underwater drone exploration?

Stress test

The plan is tight at $586,000 of annual revenue and a 71% contribution margin. A 10% sales miss, higher fixed overhead, or variable costs rising to 34% can push it below break-even fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$586,000	$0 gap	No cushion; idle time hits profit fast.
Revenue shortfall	Revenue falls 10% to $528,000.	$586,000	$42,000 gap	That miss turns into about a $42,000 operating loss.
Fixed-cost increase	Fixed costs rise to $466,000.	$657,000	$71,000 gap	Added vessel support or overhead needs more revenue.
Margin pressure	Variable expenses rise from 29% to 34%.	$631,000	$45,000 gap	Maintenance spikes or travel overruns cut the cushion.
Combined pressure	Revenue falls 10%, variable expenses rise to 34%, and fixed costs reach $466,000.	$706,000	$118,000 gap	This mix drives about a $118,000 operating loss.

Can you prove the first-year pipeline covers break-even before you lock in the underwater drone, crew, and marketing spend?

Founder checklist

Here’s the quick math: Year 1 fixed costs are about $39.1K a month, and Year 1 variable costs are 29% of revenue, so break-even lands near $55.1K in monthly revenue. The next check is whether booked work, pricing, and cash can support that before launch spend sticks.

1Revenue run-rate$55.1K/mo

Verify signed work can reach this monthly level, because that is the break-even line after Year 1 overhead and variable costs.

2Booking flowSigned jobs

Test the booking flow, deposits, change orders, and report delivery on real jobs, because demand only matters if it turns into cash fast.

3Job pricing$5.0K/$4.95K

At 20 hours at $250 per hour, inspection work is $5.0K a job, and at 18 hours at $275 per hour, surveying is $4.95K, so the mix has to be priced with discipline.

4Margin mix71% CM

Year 1 variable costs total 29% of revenue, so contribution margin is about 71% before fixed overhead; if that slips, break-even moves out fast.

5Uptime plan$670K capex

Keep the current team tight, prove the first remote-operated vehicle (ROV) stays up, and confirm insurance, vessel access, and safety gear are ready before the Year 2 pilot and the $100K backup unit, because capital spend is about $670K.

6Cash floor$84K

Hold enough cash through Month 14, when the model bottoms at $84K, because Year 1 EBITDA is still negative and billing delays can starve field work.