GulfStone Materials Group

Mexico → Florida Import Underwriting

Fine Masonry Sand · ASTM C144 target

Shipment revenue

per cargo

$1,586,979

Landed / delivered cost

all-in

$1,160,048

Gross profit

26.9% margin

$426,932

Return on deployed cost

ROI

36.8%

Economics controls

Cargo MTCargo m³Mexico quarry MXN/m³≈ $11.84/m³ · $7.89/MT at 16.89 MXN/USDOcean $/MTMX truck $/MTMX port $/MTInsurance $/MTFL port $/MTUnload $/MTFL truck $/MT

Include Florida customer delivery

USD /MT · /m³ · MXN /m³

Mexico quarry cost$7.89/MT · $11.84/m³ ($200/m³)

Port-landed Florida$33.14/MT · $49.72/m³ ($840/m³)

Delivered total$33.14/MT · $49.72/m³ ($840/m³)

Final sale price$45.34/MT · $68.01/m³ ($1,149/m³)

Gross margin26.9%

Cargo volume23,333 m³

Cost stack per metric ton

Cost componentLargest driver

Nautical route planning map

Base map: OpenStreetMap with OpenSeaMap seamarks. Punta Venado coordinate uses Mexico's federal port listing. Destination markers use official/public port coordinates. Route line is a commercial planning trajectory, not a navigational chart or approved vessel passage plan; a licensed master/agent must determine the actual voyage route.

Florida target market

Priority	Player	Region	Buyer type	Why it matters
A	ASR Materials	South Florida	Aggregate distributor / sand supplier	Direct masonry-sand and contractor channel
A	Maschmeyer Concrete	Tampa Bay / Central / East Coast	Ready-mix + block	Large multi-region consumption and Tampa Bay footprint
A	Preferred Materials	Florida	Ready-mix + block	Statewide concrete demand and local purchasing
A	Titan Florida	Florida	Cement + aggregates + ready-mix + block	Large-scale buyer; strategically important but vertically integrated
B	CEMEX USA	Florida	Aggregates + ready-mix + cement	Very large potential volume; procurement likely centralized
B	Supermix	South Florida	Ready-mix concrete	South Florida concrete buyer target
B	Independent block / precast producers	Tampa–Orlando–South Florida	Block / precast	Potential recurring masonry-sand demand

Go-to-market sequence

1. Qualify the product.
ASTM C144 target, gradation, moisture, chloride/sulfate, washing status and bulk density.
2. Sell before chartering.
Ask A-tier buyers for specifications, monthly tonnage and delivered/terminal price basis.
3. Aggregate commitments.
Target 60–80% of a cargo under LOIs/offtake before first vessel.
4. Quote three Florida ports.
Compare terminal handling + inland trucking, not ocean freight alone.
5. Pilot then scale.
20–25k MT first cargo if commercially feasible; then 35k+ MT.

Base-case assumptions & evidence

Mexico quarry quote

MXN 200 / m³

Planning FX: 16.89 MXN/USD

Density assumption

1.50 MT / m³

Replace with quarry lab bulk density.

Florida market evidence

$52 / yd³

Fine masonry sand benchmark from supplied invoice.