Hull Scan Report — Blue Horizon — HullRecords™ (v8)

01

Scan Summary

3 areas observed. 1 requires a diver within one week. 2 can be monitored or scheduled at your convenience.

62

/100

Overall Hull Score

Fair — Action Recommended

One critical item (keel zinc at 90% depletion) is driving the score down. Addressing it this week would bring the score to an estimated 78/100. Hull structure and coating are in good condition.

After zinc fix

78

Projected

Hull bottom

Moderate fouling

Schedule cleaning in 60–90 days

Propeller

Barnacle buildup

Diver clean recommended · 2–4 weeks

Keel zinc

⚠ Critical — 90% depleted

Replace this week — hull at risk

Rudder

Clean

No action needed

Rudder zinc

65% depleted

Monitor · replace in 3–4 months

Shaft / cutlass

No play detected

Inspect at next haul-out

🔒 Timestamped & permanently attributed

📹 Full 4K video on file

📄 PDF available for insurer or surveyor

🔗 Shareable link · 90-day access

02

What Was Inspected

A complete pass of the hull covering all zones shown below. Color indicates the condition found in this scan.

Blue Horizon — Beneteau Oceanis 41 — Bottom-Up View

Hull inspection zones · Color-coded by condition · Scan HR-2025-0441

Hull body

Fouling observed

Urgent — replace soon

Action needed

Clean / OK

Waterline

03

Detailed Observations

Each finding is documented with 4K video stills. Full footage available in the Video section below.

1

Hull Bottom — Moderate Fouling

Monitor

Hull bottom — midship port · 4K still

Moderate algae and barnacle accumulation observed along the hull bottom from stem to stern. Heaviest concentration midship port side and forward of the keel. Paint coat is intact — no bare substrate visible. Does not require a diver at this time.

Area affectedHull bottom — full length

UrgencyLow — 60–90 days

Est. cleaning time~3.5 hours

Action requiredYard or diver clean

2

Propeller — Significant Barnacle Encrustation

Action needed

Propeller — all 3 blades · 4K still

Significant barnacle growth on all three blades. Heavy encrustation at blade roots and hub. Estimated 8–12% efficiency reduction. Blade edges intact — no nicks or substrate damage observed. Recommend professional cleaning and inspection of shaft seal.

Area affectedAll 3 blades + hub

UrgencyMedium — 2–4 weeks

Est. efficiency loss8–12%

Action requiredDiver clean + shaft seal check

🤿

Preferred Partner — Diver

Sample Dive Services — Tom Sample

Prop cleaning · Shaft seals · Zinc replacement · SF Bay

(415) 555-0182

$95/hr · Avg response: same day

3

Keel Zinc Anode — Critical Depletion

⚠ Urgent

Keel zinc — 90% depleted · 4K still

Keel zinc anode at approximately 90% depletion. Protective sacrificial metal nearly consumed — hull and keel are now vulnerable to galvanic corrosion. Rudder zinc is at 65% (moderate). Immediate replacement of keel zinc is required. This is the only finding in this scan that needs a diver.

Area affectedKeel zinc (critical)

UrgencyHIGH — within 1 week

Corrosion riskActive without protection

Action requiredDiver: remove + replace keel zinc

🤿

Preferred Partner — Diver

Example Dive Co. — Lisa Example

Anode service · Hull cleaning · Pre-purchase dives · SF Bay

(415) 555-0247

$90/hr · Avg response: 24 hrs

04

What to Do Next

⚠️

Immediate action required

Keel zinc anode is 90% depleted

Your hull is currently unprotected from galvanic corrosion. A diver needs to replace the keel zinc within this week. Both preferred partners below have same-day or next-day availability.

📞 Call diver now

All other actions can be scheduled at your convenience:

Priority	Finding	Action	Timeframe	By
⚠ Urgent	Keel zinc depleted	Replace zinc anode	This week	Diver
Medium	Propeller barnacles	Diver clean + shaft check	2–4 weeks	Diver
Monitor	Moderate hull fouling	Schedule bottom cleaning	60–90 days	Yard / Diver

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05

Hull History

All scans stored permanently and shareable via link. Attribution and timestamps are immutable.

Nov 14, 2025 · HR-2025-0441 · Current scan

3 findings · Zinc urgent · Prop fouling

224 days since last scan. Zinc critical — action required this week.

This scan

Apr 3, 2025 · HR-2025-0188 · 7 months ago

1 finding · Minor fouling · All zincs OK

Hull bottom clean. Zincs at 30–40%. Propeller clear. No diver required.

GoodView report →

Sep 12, 2024 · HR-2024-0892 · 14 months ago

Clean hull · Zincs at 40% · Propeller clear

Best condition on record. Post-haul scan. All systems clean.

GoodView report →

Feb 27, 2024 · HR-2024-0301 · 21 months ago

Moderate fouling · Zincs replaced post-scan

First scan on record. Zincs replaced by diver within 48 hours of this report.

FairView report →

06

4K Scan Video

Complete hull pass — bow to stern, keel to waterline. 38 minutes of 4K footage you can share with your surveyor, insurer, or buyer.

● REC 4K 38:24

Sign in to play full scan

Available in your portal

Share this video

hullrecords.com/vessel/
blue-horizon/scan/HR-2025-0441

Video expires Feb 12, 2026
PDF always available

07

Photo Set

Timestamped and attributed. All images are included in your downloadable report. Examples shown from recent HullRecords™ scans.

Windward
08 OCT 2025 · 10:42
HR-2025-0387

Hull Bottom — PortModerate fouling, paint intact

Salty Dog
22 SEP 2025 · 08:55
HR-2025-0351

Hull — StarboardUniform coverage, no bare patches

Pacific Drifter
03 NOV 2025 · 11:16
HR-2025-0412

PropellerAll blades — barnacle encrustation

Compass Rose
17 OCT 2025 · 09:03
HR-2025-0396

Propeller DetailBlade roots and hub in good shape, no buildup — monitor in 90 days

Fair Winds
29 OCT 2025 · 14:22
HR-2025-0405

Rudder Zinc AnodePitting visible but material remaining — ~70% depleted, replace in 3 months

Tideline
11 NOV 2025 · 15:47
HR-2025-0429

Shaft Zinc & PropellerShaft zinc in good shape, shaft soft buildup — clean in 30–60 days

This is what your boat looks like underwater.

4K video. Full report. Preferred diver contacts. Delivered the same day at your slip.

Book your scan See pricing

08

Zone-by-Zone Summary — Blue Horizon Coming Soon

Complete status of every inspected zone. Click any action button to get started.

Zone	Area	Status	Required Action	Provider	Scanned	Next Checkup
1	Bow	OK	None — clean	—	14 Nov 2025	May 2026
2	Port Forward	Monitor	Schedule hull cleaning	Sample Dive ↗	14 Nov 2025	Feb 2026
3	Starboard Forward	Monitor	Schedule hull cleaning	Sample Dive ↗	14 Nov 2025	Feb 2026
4	Keel + Zinc	⚠ Urgent	Replace zinc anode immediately	Example Dive Co. ☎	14 Nov 2025	This week
5	Port Aft	Monitor	Light fouling — schedule cleaning	Sample Dive ↗	14 Nov 2025	Feb 2026
6	Starboard Aft	Monitor	Light fouling — schedule cleaning	Sample Dive ↗	14 Nov 2025	Feb 2026
7	Prop + Rudder	Action	Diver clean propeller + check shaft seal	Tom Sample ☎	14 Nov 2025	2–4 weeks

09

Automatically Generated Diver Work Orders Coming Soon

Based on the scan findings, precise instructions are generated for your diver — what to check, what technique to use, and what parts to bring.

🔧

Work Order #1 — Keel Zinc Replacement

PRIORITY: URGENT · COMPLETE WITHIN 7 DAYS

            Blue Horizon · Beneteau Oceanis 41
            14 NOV 2025 · HR-2025-0441
          

            Diver: Example Dive Co. — Lisa Example
            Owner: John A. Doe
          

Task

Remove depleted keel zinc anode and install replacement. Inspect mounting hardware and bonding wire continuity.

Recommended Part

Martyr CMR04 Zinc Anode (2.5 lb)
Fits Beneteau Oceanis 41 keel bolt pattern
Alternative: Tecnoseal TEC-R4 (MIL-spec zinc)

Technique

Use 13mm socket to remove mounting bolts. Wire-brush contact surface to bare metal. Apply TefGel anti-seize to bolt threads. Torque to 15 ft-lbs. Verify bonding wire continuity with multimeter (should read <1 ohm to hull ground).

Additional Check

While at the keel, inspect rudder zinc (currently at 65%). If degraded further, replace both in the same dive.

🤿

Work Order #2 — Propeller Service

PRIORITY: MEDIUM · SCHEDULE WITHIN 2–4 WEEKS

            Blue Horizon · Beneteau Oceanis 41
            14 NOV 2025 · HR-2025-0441
          

            Diver: Sample Dive Services — Tom Sample
            Owner: John A. Doe
          

Task

Remove barnacle encrustation from all 3 blades, hub, and blade roots. Inspect for blade edge nicks, pitting, or coating loss. Check shaft seal for weeping.

Technique

Use plastic scraper on blade faces to avoid nicking. Brass wire brush on hub and blade roots only. Do NOT use steel tools on propeller surfaces. Check blade edges for chips — any nick >2mm should be noted for prop shop refinish.

Shaft Seal Check

PSS (PYI shaft seal) — Beneteau OEM
Check for drip rate: acceptable is <10 drops/min underway
Visual: look for mineral deposits at seal face
If weeping: note for haul-out service

Antifouling

Apply PropSpeed or Velox Plus to cleaned propeller if owner approves. These coatings significantly reduce barnacle adhesion between scans.

Generated from scan HR-2025-0441 · Review with your diver before starting work

10

Pre-Purchase Buyer Report Coming Soon

Automatically generated vessel condition summary for prospective buyers. Includes technical specifications, current condition, and estimated cost to restore to survey-ready condition.

📄

Buyer Report — Blue Horizon

GENERATED FROM SCAN HR-2025-0441 · 14 NOV 2025

          Blue Horizon · Owner: John A. Doe
          Slip B-22, South Beach Harbor, SF
        

Vessel Specifications

Make/Model: Beneteau Oceanis 41
Year: 2018 · LOA: 41'2" · Beam: 13'5"
Draft: 6'10" · Displacement: 19,180 lbs

Hull: Fiberglass (GRP) · White gelcoat
Keel: Cast iron fin · Lead bulb
Rudder: Spade, composite

Propulsion

Engine: Yanmar 3YM30 (29 HP diesel)
Propeller: 3-blade fixed, bronze, 16" diameter
Shaft: 1" stainless, PSS shaft seal (PYI)
Saildrive: N/A — conventional shaft drive

Cathodic Protection

Keel zinc: Martyr CMR04 (2.5 lb) — 90% depleted, REPLACE IMMEDIATELY
Rudder zinc: Tecnoseal R4 — ~70% depleted, replace within 3 months
Shaft zinc: Collar type — ~50% depleted, monitor
Bonding system: Verified connected at last haul-out (Sep 2024)

Hull Condition Summary

Hull Structure

Intact. No blistering, crazing, or osmosis. Gelcoat in good condition. No repairs detected.

Bottom Paint

Pettit Trinidad SR (ablative, blue). Applied Sep 2024. Moderate fouling — performing within expected range at 14 months.

Zinc Anodes

Keel zinc critical — must be replaced before closing. Rudder and shaft zincs serviceable but aging.

Running Gear

Propeller has barnacle encrustation (cleanable). Shaft seal intact. No play in rudder. Cutlass bearing OK.

Estimated Cost to Restore to Survey-Ready Condition

Item	Action	Est. Cost
Keel zinc replacement	Diver — remove + install	$180–$250
Propeller cleaning	Diver — scrape + inspect	$150–$200
Hull bottom cleaning	Diver or yard	$350–$500
Rudder zinc (preventive)	Replace at same dive	$90–$120
Total estimated		$770–$1,070

Estimates based on SF Bay area diver rates. Actual costs may vary. Hull structure is sound — no major repairs anticipated.

11

Marina Dashboard Coming Soon

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South Beach Harbor — San Francisco

214 slips · 189 occupied · 47 scanned by HullRecords™

Scanned Scan due Not enrolled

Partnership Models for Marina Owners

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Add $20–30/mo to slip fees. Include quarterly scans as a perk. You keep the spread.

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List at $299. Owner books via marina. You keep 30%, we handle the scan.

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Require annual hull scan to maintain a slip. 100% participation, zero selling.

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Require condition scan before move-in. $299 fee — marina keeps $100.

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12

Chat with your Hull™ Coming Soon

Ask anything about your hull, propeller, zincs, or boat in general. Our AI knows your vessel's complete scan history, maintenance record, and technical specifications. Available exclusively in your HullRecords™ portal.

Chat with your Hull™

Blue Horizon · Beneteau Oceanis 41

Welcome back! I've reviewed your latest scan (Nov 14, 2025). You have one critical item I'd like to discuss. What would you like to know?

When should I replace my keel zinc based on the last scan?

Based on your scan from Nov 14, 2025, your keel zinc is at 90% depletion — this is critical. I recommend replacing it within this week. Your previous zinc lasted approximately 14 months (installed Feb 2024, now nearly depleted). For your Oceanis 41 in SF Bay conditions, I'd suggest upgrading to a Martyr CMR04 zinc anode (2.5 lb) which typically provides 10–12 months of protection in your slip's water chemistry.

What about the propeller? Can I wait?

Your propeller has significant barnacle buildup on all 3 blades with ~10% efficiency loss. You can wait 2–4 weeks, but I'd schedule a diver clean when they come for the zinc — it's more cost-effective to do both in one dive. The shaft seal looks intact from the scan footage, but ask the diver to verify while they're down there.

What paint was last used on my hull bottom?

Based on your haul-out records from Sep 2024, your hull was painted with Pettit Trinidad SR (ablative antifouling, blue). This paint typically lasts 12–18 months in SF Bay. Given that you're at 14 months and seeing moderate fouling, it's performing within expected range. I'd plan for a repaint at your next haul-out, likely Spring 2026.

Try asking

"How long will my zinc last?"

"Compare my last 3 scans"

"What should I tell the surveyor?"

"When should I haul out next?"

"Generate a diver work order"

🔒

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This is the living website of your hull.

Blue Horizon

Scan Summary

What Was Inspected

Blue Horizon — Beneteau Oceanis 41 — Bottom-Up View

Detailed Observations

What to Do Next

📦 Share your complete hull record before sale, renewal, or survey

Hull History

4K Scan Video

Photo Set

This is what your boat looks like underwater.

Zone-by-Zone Summary — Blue Horizon Coming Soon

Automatically Generated Diver Work Orders Coming Soon

Work Order #1 — Keel Zinc Replacement

Task

Recommended Part

Technique

Additional Check

Work Order #2 — Propeller Service

Task

Technique

Shaft Seal Check

Antifouling

Pre-Purchase Buyer Report Coming Soon

Buyer Report — Blue Horizon

Vessel Specifications

Propulsion

Cathodic Protection

Hull Condition Summary

Estimated Cost to Restore to Survey-Ready Condition

Marina Dashboard Coming Soon

Chat with your Hull™ Coming Soon

Chat with your Hull™

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