ARBOK-Glide (Charged-Nano Antifouling Coating for Marine Hulls)

Overview

ARBOK-Glide is a biocide-free antifouling coating that repels marine fouling by physics rather than poison. The active component is thermally expanded graphite — a graphene-rich material whose billions of separated layers stand like sea-urchin spines, their exposed edges carrying persistent electric charge from coordinatively unsaturated terminal carbon atoms. Larvae and spores attempting to settle are electrostatically repelled before biofilm can form. The coating eliminates toxic copper and tributyltin entirely, cuts shipping fuel consumption by 10–25 %, and saves $2.4–4.8 million per year on a large vessel. Because the charge is intrinsic to the material structure, it neither dissipates in seawater nor abrades away.

Applications

Commercial shipping (primary market): container ships, tankers, bulk carriers, general cargo and RoRo vessels across a global fleet exceeding 100,000 ships. Particularly valuable in high-biofouling zones — warm waters and estuaries — where fouling accelerates.

Naval and coast guard: speed and stealth are critical, and a charged surface leaves no chemical signature, unlike copper-poisoned hulls detectable by sensors. Retrofit during scheduled dry-docking.

Offshore structures: FPSO vessels, platforms, subsea pipelines; power-plant and desalination intake structures where biofouling damages heat exchangers and reduces throughput.

Aquaculture and specialized marine: fish cages, where fouling compromises water flow and biocide-free coating is essential to avoid poisoning stock; research vessel hulls and oceanographic platforms.

Non-marine: freshwater intake screens, hydroelectric spillways, riverine structures.

Operating Principle

Thermally expanded graphite nano-particles are dispersed into a marine-grade paint matrix at a controlled proprietary ratio via ARBOK's specialized dispersion process. Each TEG grain contains approximately 3–5 billion separated graphene layers with maximum exposed surface area. Three mechanisms act together:

1. Electrostatic repulsion (primary). Exposed graphene edges carry persistent charge from the edge effect of coordinatively unsaturated terminal carbon atoms in six-membered rings. A settling larva or spore contacting these edges is repelled before adhesion can initiate. The charge is intrinsic to the structure — it does not leach or abrade.
2. Hydrophobic foul-release (secondary). TEG is inherently hydrophobic and non-wetting, so water and organic particles shed rather than adhere.
3. Biofilm suppression (tertiary). Graphene itself has documented antibacterial, antiviral and fungicidal properties, suppressing biofilm even where particles do contact the surface.

No biocide molecule is present in the formulation.

Limitations: charge persistence over an 18–24 month service life in seawater, UV and mechanical stress requires field validation; edge charge must be shown stable across tropical, temperate and polar salinities; dispersion must achieve consistent nano-particle distribution at industrial scale.

Key Parameters

| Parameter | Value |

|---|---|

| Fuel consumption reduction | 10–25 % |

| Annual fuel saving, large vessel | $2.4–6.0 M |

| Coating thickness | 3–4 mm (typical marine paint) |

| Service life between dry-dockings | 18–24 months, regenerable on recoat |

| Graphene layers per TEG grain | ~3–5 billion |

| Material cost | ~$800–1,200/tonne (vs $500–700 standard) |

| Paint required, large vessel recoat | ~80–120 tonnes |

| Total coating cost, large vessel | $80–150k (vs $50–100k standard) |

| Biocide content | None |

| Application methods | Standard spray, roller, airless |

Architecture and Components

Thermally expanded graphite nano-particles, produced serially on ARBOK mobile and stationary units at industrial volumes; marine-grade paint matrix; ARBOK proprietary dispersion process ensuring consistent nano-particle distribution. Applied as a thin layer over standard anti-corrosion primer, requiring no special surface preparation beyond normal antifouling recoat procedure and no special application equipment or training.

Advantages

Technical: charge is intrinsic and does not dissipate in seawater or abrade away; three complementary mechanisms rather than one; effective without dependence on vessel speed, unlike silicone foul-release which needs above roughly 13 knots; compatible with standard application methods.

Economic: coating premium of approximately $50–80k against annual fuel savings of $2.4–6.0 M gives payback in under a week of operation and a five-year net benefit of $12–30 M per vessel. Secondary savings from fewer dry-dockings, less blasting and reduced off-hire downtime.

Environmental and regulatory: no biocide, so no copper or TBT leaching into sediments; 20–25 % fuel cut directly reduces carbon footprint, easing IMO CII penalties and EU carbon charges; formulation compatible with IMO, EU and SOLAS environmental requirements.

Strategic: for naval use, no chemical trace means no unmasking signature, improving stealth.

Integrations

AEROGRAPH (Graphene AeroGel) · MAGNA (Metal-Graphene) · ARBOK EMI TEG Protection Paint

Built on ARBOK's existing TEG production line, so feedstock manufacturing is already established. Route to market runs through partnership or OEM/licensing agreement with major marine paint manufacturers.

Deployment & Operation

Application: coat over anti-corrosion primer using standard marine paint methods; no deviation from existing yard procedure.

Current status (2025–2026): TEG production operational and serially manufactured; lab proof-of-concept on coated coupons confirming biofilm repulsion and bacterial suppression; economic model validated against IMO and industry data; initial discussions with marine paint suppliers.

Near-term (2026–2027): field trials on 2–5 test vessels across varied sizes and trade routes over 12–18 months; real-world fouling and fuel data collection; regulatory submissions for SOLAS approval and IMO CII recognition; pilot commercial production.

Medium-term (2027–2029): regulatory approval; 50–200 vessels coated annually; partnership with one or two major paint manufacturers; production scale-up.

Long-term (2030+): 5–10 % of global fleet recoated annually (5,000–10,000 vessels); annual revenue $250–500 M; variants for fresh water, offshore platforms and pipelines.

TRL

TRL 5–6 (pilot / demonstration). Physics of graphene edge-charge and biofilm repulsion validated in the laboratory; small-scale test coupons show biofilm suppression and bacterial inhibition; TEG serial production established with secure cost and supply chain; economic model confirmed against shipping industry data.

Advancement to TRL 7–8 requires full-scale field trials on 2–5 operational vessels over 12–18 months with independently verified fuel and fouling data, SOLAS and IMO approval, paint-formulation and application-capacity partnerships, and price-point validation with operators.

Market Potential

Biofouling costs global shipping approximately $100 billion annually. A biofilm layer just 0.5 mm thick raises fuel consumption 20–25 %; moderate calcareous fouling from barnacles raises it 55–85 %. Fouling is currently managed by dry-docking every 18–60 months, mechanical cleaning at $12–35k per pass, abrasive blasting and biocidal repainting.

Global merchant fleet exceeds 100,000 ships. The biofouling management market — coatings plus cleaning — stands at approximately $2.05 billion in 2025, growing to $2.6 billion by 2031. At 25 % penetration, ARBOK-Glide addressable revenue is $510–650 million annually, with margin expansion available through captive TEG production and paint formulation.

Competing approaches: TBT is globally banned; copper-based coatings hold approximately 56.8 % of market but face tightening restriction in the EU and North America; silicone foul-release costs $1,200–1,800/tonne, works only above roughly 13 knots, is mechanically fragile and lasts 24–36 months; hull-cleaning robots (market approximately $2.68 billion by 2035) and in-water cleaning at $12–35k per pass remain supplementary and recurring; enzymatic deterrents are experimental; self-polishing coatings have variable durability and many remain biocide-based.

Typical Project Economics

Per large vessel: material at approximately $800–1,200/tonne against $500–700 for standard antifouling, a 15–25 % material premium; 80–120 tonnes required per recoat; total coating cost $80–150k against $50–100k standard, a coating premium of roughly $50–80k. Application labour is standard.

Against this: 200 tonnes/day over 200 steaming days is 40,000 tonnes/year; at VLSFO around $600/tonne the baseline fuel budget is $24 million; eliminating a 10–25 % fouling penalty saves $2.4–6.0 million per year. Payback is under one week of operation; five-year net benefit $12–30 million per vessel. Additional value accrues from reduced dry-docking, less downtime, and lower IMO CII and EU carbon charges.

Risk Factors

Technical: durability of the charged edge over an 18–24 month service life in seawater, UV and mechanical stress must be demonstrated; dispersion must scale to consistent industrial output; edge charge must not dissipate in high salinity across tropical, temperate and polar waters; any deviation from standard application methods risks adoption resistance.

Market: shipping is conservative and incumbent suppliers hold decades-long relationships with operators and yards; extensive fleet trials are needed to prove ROI; operators and charterers may resist the additional capex even against strong returns; IMO approval timelines of 18–36 months could erode early-mover advantage.

Economic: the 30–50 % coating premium may deter owners in low-margin operations or shipping downturns; ROI varies by trade route, since warm-water operators see a 10–25 % fouling penalty against 5–10 % for cold-water routes; if fuel falls below $400/tonne the fuel-savings payback stretches, though carbon charges partly offset this.

Related Technologies

AEROGRAPH (Graphene AeroGel) · MAGNA (Metal-Graphene) · ARBOK CleanSea · ARBOK Anti-Mucilage · ARBOK-LINER (ALB)