{ "dataset": "Boat Lift Sizing Reference Dataset", "publisher": "Punta Gorda Boat Lift Repair Research", "version": "2.0.0", "built": "2026-07-24", "scope": { "resources_reviewed": 10, "numerically_reproducible_methods": 8, "nonreproducible_resources": [ "Golden Boat Lifts", "Hi-Tide Boat Lifts" ], "reference_vessel_dry_weight_scope": "The declared base dry-weight input excludes every component separately itemized in the study: engines, fuel and tank contents, stored gear, listed batteries, and the declared top." }, "reference_constants": { "nist_gasoline_lb_per_us_gal_at_60f": "6.213", "nist_diesel_lb_per_us_gal_at_60f": "7.113", "usgs_fresh_water_lb_per_us_gal_at_70f": "8.329", "noaa_reference_seawater_density_kg_m3": "1025", "noaa_reference_seawater_lb_per_us_gal": "8.554040", "us_liquid_gallon_m3_exact": "0.003785411784" }, "reference_vessels": [ { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "dry_weight_excluding_engines_lb": "3200", "engine_count": 1, "engine_unit_weight_lb": "629", "fuel_gal": "120", "livewell_saltwater_gal": "40", "freshwater_gal": "0", "wastewater_gal": "0", "stored_gear_lb": "250", "battery_count": 2, "battery_unit_weight_lb": "70", "top_weight_lb": "150", "dry_weight_scope": "The declared base dry-weight input excludes every component separately itemized in the study: engines, fuel and tank contents, stored gear, listed batteries, and the declared top.", "engines_lb": "629", "batteries_lb": "140" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "dry_weight_excluding_engines_lb": "8500", "engine_count": 2, "engine_unit_weight_lb": "629", "fuel_gal": "300", "livewell_saltwater_gal": "50", "freshwater_gal": "30", "wastewater_gal": "20", "stored_gear_lb": "400", "battery_count": 4, "battery_unit_weight_lb": "70", "top_weight_lb": "400", "dry_weight_scope": "The declared base dry-weight input excludes every component separately itemized in the study: engines, fuel and tank contents, stored gear, listed batteries, and the declared top.", "engines_lb": "1258", "batteries_lb": "280" } ], "method_definitions": [ { "method": "ShoreMaster", "publisher_type": "manufacturer", "source_title": "Determining Boat Lift Capacity: A Guide to Accurate Measurements", "source_url": "https://www.shoremaster.com/blog/articles/determining-boat-lift-capacity-a-guide-to-accurate-measurements-shoremaster/", "source_date": "2021-08-26", "counts_or_flags_omitted_engine": true, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "20%", "formula_transparency": "published formula and narrative additions", "method_note": "Adds an omitted motor and water to dry + fuel×6 + 500, then recommends 20% and sizing up." }, { "method": "HydroHoist", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Capacity: How Do I Determine What Lift Capacity I Need?", "source_url": "https://www.boatlift.com/blog/articles/boat-lift-weight-capacity-how-do-i-determine-what-lift-capacity-i-need-hydrohoist/", "source_date": "2023-05-25", "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "at least 20%", "formula_transparency": "published formula", "method_note": "Dry + fuel×6 + water×8 + 500, then at least 20%; no express omitted-engine instruction." }, { "method": "Hewitt", "publisher_type": "manufacturer", "source_title": "How to Size a Boat Lift Correctly", "source_url": "https://www.hewittrad.com/about-us/news-and-events/how-to-size-a-boat-lift-correctly", "source_date": "2025-06-30", "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "20%", "formula_transparency": "published formula; fuel factor undisclosed", "method_note": "Dry + fuel + people/gear + livewell/ballast water + batteries, ×1.2; NIST fuel reference used here." }, { "method": "IMM Quality Boat Lifts", "publisher_type": "manufacturer", "source_title": "How to Choose the Correct Capacity Boat Lift for your Boat", "source_url": "https://iqboatlifts.com/how-to-choose-the-correct-capacity-boat-lift-for-your-boat/", "source_date": "2017-04-09", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": true, "numeric_separate_margin": "20%", "formula_transparency": "guide discloses factors; calculator result is gated", "method_note": "Adds omitted outboards, fuel×6, water×8, gear and additions, then 20%." }, { "method": "Pier & Waterfront Solutions", "publisher_type": "dealer/installer", "source_title": "Boat Lift Calculations Part 4 of 4", "source_url": "https://wisconsinpws.com/boat-lift-calculations-part-4/", "source_date": "2019-02-26", "counts_or_flags_omitted_engine": true, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "10–20%", "formula_transparency": "published ranges and method", "method_note": "Adds an omitted outboard, fuel×6–7, water×8, gear and modifications, then 10–20%." }, { "method": "Hurricane Boat Lifts", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Capacity Explained: How to Calculate the Right Lift for Your Vessel", "source_url": "https://www.hurricaneboatlifts.com/boat-lift-weight-capacity-calculator/", "source_date": "current page read 2026-07-24", "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "10–20%", "formula_transparency": "published method; water factor undisclosed", "method_note": "Dry + fuel + water + gear/equipment, then 10–20%; neutral water references used here." }, { "method": "Calculator Academy", "publisher_type": "independent calculator publisher", "source_title": "Boat Lift Capacity Calculator", "source_url": "https://calculator.academy/boat-lift-capacity-calculator/", "source_date": "2026-01-16", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "10–25%+", "formula_transparency": "published custom formula and factors", "method_note": "Custom method counts known omitted engine as an accessory, fuel×6.0–6.3, water×8.34, then 10–25%." }, { "method": "Neptune Boat Lifts", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Calculator", "source_url": "https://www.neptuneboatlifts.com/resources/boat-lift-weight-calculator/", "source_date": "current page read 2026-07-24", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not quantified separately", "formula_transparency": "published constants; calculator code not disclosed", "method_note": "Adds omitted engines, fuel×6.5, water×8.5 and known equipment, then a 15% allowance." }, { "method": "Golden Boat Lifts", "publisher_type": "manufacturer", "source_title": "Weight Calculator", "source_url": "https://goldenboatlifts.com/weight-calculator/", "source_date": "current page read 2026-07-24", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not disclosed", "formula_transparency": "inputs visible; coefficients and algorithm undisclosed", "method_note": "Collects propulsion, outboard count and horsepower, tanks, top, batteries and extras; excluded from numeric spread." }, { "method": "Hi-Tide Boat Lifts", "publisher_type": "manufacturer", "source_title": "Lift Calculator", "source_url": "https://hi-tide.com/lift-calculator/", "source_date": "current page read 2026-07-24", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not disclosed separately", "formula_transparency": "inputs and 15% gear allowance visible; fluid coefficients undisclosed", "method_note": "Dry weight explicitly excludes outboards; engine and tank inputs; 15% onboard-gear allowance; excluded from numeric spread." } ], "method_comparison": [ { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "ShoreMaster", "publisher_type": "manufacturer", "source_title": "Determining Boat Lift Capacity: A Guide to Accurate Measurements", "source_url": "https://www.shoremaster.com/blog/articles/determining-boat-lift-capacity-a-guide-to-accurate-measurements-shoremaster/", "source_date": "2021-08-26", "required_capacity_low_exact_lb": "6469.394", "required_capacity_high_exact_lb": "6469.394", "required_capacity_low_rounded_up_lb": 6470, "required_capacity_high_rounded_up_lb": 6470, "counts_or_flags_omitted_engine": true, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "20%", "formula_transparency": "published formula and narrative additions", "method_note": "Adds an omitted motor and water to dry + fuel×6 + 500, then recommends 20% and sizing up.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "HydroHoist", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Capacity: How Do I Determine What Lift Capacity I Need?", "source_url": "https://www.boatlift.com/blog/articles/boat-lift-weight-capacity-how-do-i-determine-what-lift-capacity-i-need-hydrohoist/", "source_date": "2023-05-25", "required_capacity_low_exact_lb": "5688.000", "required_capacity_high_exact_lb": "5688.000", "required_capacity_low_rounded_up_lb": 5688, "required_capacity_high_rounded_up_lb": 5688, "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "at least 20%", "formula_transparency": "published formula", "method_note": "Dry + fuel×6 + water×8 + 500, then at least 20%; no express omitted-engine instruction.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "Hewitt", "publisher_type": "manufacturer", "source_title": "How to Size a Boat Lift Correctly", "source_url": "https://www.hewittrad.com/about-us/news-and-events/how-to-size-a-boat-lift-correctly", "source_date": "2025-06-30", "required_capacity_low_exact_lb": "5613.266", "required_capacity_high_exact_lb": "5613.266", "required_capacity_low_rounded_up_lb": 5614, "required_capacity_high_rounded_up_lb": 5614, "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "20%", "formula_transparency": "published formula; fuel factor undisclosed", "method_note": "Dry + fuel + people/gear + livewell/ballast water + batteries, ×1.2; NIST fuel reference used here.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "IMM Quality Boat Lifts", "publisher_type": "manufacturer", "source_title": "How to Choose the Correct Capacity Boat Lift for your Boat", "source_url": "https://iqboatlifts.com/how-to-choose-the-correct-capacity-boat-lift-for-your-boat/", "source_date": "2017-04-09", "required_capacity_low_exact_lb": "6490.800", "required_capacity_high_exact_lb": "6490.800", "required_capacity_low_rounded_up_lb": 6491, "required_capacity_high_rounded_up_lb": 6491, "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": true, "numeric_separate_margin": "20%", "formula_transparency": "guide discloses factors; calculator result is gated", "method_note": "Adds omitted outboards, fuel×6, water×8, gear and additions, then 20%.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "Pier & Waterfront Solutions", "publisher_type": "dealer/installer", "source_title": "Boat Lift Calculations Part 4 of 4", "source_url": "https://wisconsinpws.com/boat-lift-calculations-part-4/", "source_date": "2019-02-26", "required_capacity_low_exact_lb": "5949.900", "required_capacity_high_exact_lb": "6634.800", "required_capacity_low_rounded_up_lb": 5950, "required_capacity_high_rounded_up_lb": 6635, "counts_or_flags_omitted_engine": true, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "10–20%", "formula_transparency": "published ranges and method", "method_note": "Adds an omitted outboard, fuel×6–7, water×8, gear and modifications, then 10–20%.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "Hurricane Boat Lifts", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Capacity Explained: How to Calculate the Right Lift for Your Vessel", "source_url": "https://www.hurricaneboatlifts.com/boat-lift-weight-capacity-calculator/", "source_date": "current page read 2026-07-24", "required_capacity_low_exact_lb": "5282.378", "required_capacity_high_exact_lb": "5762.594", "required_capacity_low_rounded_up_lb": 5283, "required_capacity_high_rounded_up_lb": 5763, "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "10–20%", "formula_transparency": "published method; water factor undisclosed", "method_note": "Dry + fuel + water + gear/equipment, then 10–20%; neutral water references used here.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "Calculator Academy", "publisher_type": "independent calculator publisher", "source_title": "Boat Lift Capacity Calculator", "source_url": "https://calculator.academy/boat-lift-capacity-calculator/", "source_date": "2026-01-16", "required_capacity_low_exact_lb": "5964.860", "required_capacity_high_exact_lb": "6823.250", "required_capacity_low_rounded_up_lb": 5965, "required_capacity_high_rounded_up_lb": 6824, "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "10–25%+", "formula_transparency": "published custom formula and factors", "method_note": "Custom method counts known omitted engine as an accessory, fuel×6.0–6.3, water×8.34, then 10–25%.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "Neptune Boat Lifts", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Calculator", "source_url": "https://www.neptuneboatlifts.com/resources/boat-lift-weight-calculator/", "source_date": "current page read 2026-07-24", "required_capacity_low_exact_lb": "6312.350", "required_capacity_high_exact_lb": "6312.350", "required_capacity_low_rounded_up_lb": 6313, "required_capacity_high_rounded_up_lb": 6313, "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not quantified separately", "formula_transparency": "published constants; calculator code not disclosed", "method_note": "Adds omitted engines, fuel×6.5, water×8.5 and known equipment, then a 15% allowance.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "Golden Boat Lifts", "publisher_type": "manufacturer", "source_title": "Weight Calculator", "source_url": "https://goldenboatlifts.com/weight-calculator/", "source_date": "current page read 2026-07-24", "required_capacity_low_exact_lb": "", "required_capacity_high_exact_lb": "", "required_capacity_low_rounded_up_lb": "", "required_capacity_high_rounded_up_lb": "", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not disclosed", "formula_transparency": "inputs visible; coefficients and algorithm undisclosed", "method_note": "Collects propulsion, outboard count and horsepower, tanks, top, batteries and extras; excluded from numeric spread.", "status": "reviewed—not numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "method": "Hi-Tide Boat Lifts", "publisher_type": "manufacturer", "source_title": "Lift Calculator", "source_url": "https://hi-tide.com/lift-calculator/", "source_date": "current page read 2026-07-24", "required_capacity_low_exact_lb": "", "required_capacity_high_exact_lb": "", "required_capacity_low_rounded_up_lb": "", "required_capacity_high_rounded_up_lb": "", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not disclosed separately", "formula_transparency": "inputs and 15% gear allowance visible; fluid coefficients undisclosed", "method_note": "Dry weight explicitly excludes outboards; engine and tank inputs; 15% onboard-gear allowance; excluded from numeric spread.", "status": "reviewed—not numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "ShoreMaster", "publisher_type": "manufacturer", "source_title": "Determining Boat Lift Capacity: A Guide to Accurate Measurements", "source_url": "https://www.shoremaster.com/blog/articles/determining-boat-lift-capacity-a-guide-to-accurate-measurements-shoremaster/", "source_date": "2021-08-26", "required_capacity_low_exact_lb": "15482.582", "required_capacity_high_exact_lb": "15482.582", "required_capacity_low_rounded_up_lb": 15483, "required_capacity_high_rounded_up_lb": 15483, "counts_or_flags_omitted_engine": true, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "20%", "formula_transparency": "published formula and narrative additions", "method_note": "Adds an omitted motor and water to dry + fuel×6 + 500, then recommends 20% and sizing up.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "HydroHoist", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Capacity: How Do I Determine What Lift Capacity I Need?", "source_url": "https://www.boatlift.com/blog/articles/boat-lift-weight-capacity-how-do-i-determine-what-lift-capacity-i-need-hydrohoist/", "source_date": "2023-05-25", "required_capacity_low_exact_lb": "13920.000", "required_capacity_high_exact_lb": "13920.000", "required_capacity_low_rounded_up_lb": 13920, "required_capacity_high_rounded_up_lb": 13920, "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "at least 20%", "formula_transparency": "published formula", "method_note": "Dry + fuel×6 + water×8 + 500, then at least 20%; no express omitted-engine instruction.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "Hewitt", "publisher_type": "manufacturer", "source_title": "How to Size a Boat Lift Correctly", "source_url": "https://www.hewittrad.com/about-us/news-and-events/how-to-size-a-boat-lift-correctly", "source_date": "2025-06-30", "required_capacity_low_exact_lb": "13765.922", "required_capacity_high_exact_lb": "13765.922", "required_capacity_low_rounded_up_lb": 13766, "required_capacity_high_rounded_up_lb": 13766, "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "20%", "formula_transparency": "published formula; fuel factor undisclosed", "method_note": "Dry + fuel + people/gear + livewell/ballast water + batteries, ×1.2; NIST fuel reference used here.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "IMM Quality Boat Lifts", "publisher_type": "manufacturer", "source_title": "How to Choose the Correct Capacity Boat Lift for your Boat", "source_url": "https://iqboatlifts.com/how-to-choose-the-correct-capacity-boat-lift-for-your-boat/", "source_date": "2017-04-09", "required_capacity_low_exact_lb": "16125.600", "required_capacity_high_exact_lb": "16125.600", "required_capacity_low_rounded_up_lb": 16126, "required_capacity_high_rounded_up_lb": 16126, "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": true, "numeric_separate_margin": "20%", "formula_transparency": "guide discloses factors; calculator result is gated", "method_note": "Adds omitted outboards, fuel×6, water×8, gear and additions, then 20%.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "Pier & Waterfront Solutions", "publisher_type": "dealer/installer", "source_title": "Boat Lift Calculations Part 4 of 4", "source_url": "https://wisconsinpws.com/boat-lift-calculations-part-4/", "source_date": "2019-02-26", "required_capacity_low_exact_lb": "14781.800", "required_capacity_high_exact_lb": "16485.600", "required_capacity_low_rounded_up_lb": 14782, "required_capacity_high_rounded_up_lb": 16486, "counts_or_flags_omitted_engine": true, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "10–20%", "formula_transparency": "published ranges and method", "method_note": "Adds an omitted outboard, fuel×6–7, water×8, gear and modifications, then 10–20%.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "Hurricane Boat Lifts", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Capacity Explained: How to Calculate the Right Lift for Your Vessel", "source_url": "https://www.hurricaneboatlifts.com/boat-lift-weight-capacity-calculator/", "source_date": "current page read 2026-07-24", "required_capacity_low_exact_lb": "13446.567", "required_capacity_high_exact_lb": "14668.982", "required_capacity_low_rounded_up_lb": 13447, "required_capacity_high_rounded_up_lb": 14669, "counts_or_flags_omitted_engine": false, "interactive": false, "email_gated_result": false, "numeric_separate_margin": "10–20%", "formula_transparency": "published method; water factor undisclosed", "method_note": "Dry + fuel + water + gear/equipment, then 10–20%; neutral water references used here.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "Calculator Academy", "publisher_type": "independent calculator publisher", "source_title": "Boat Lift Capacity Calculator", "source_url": "https://calculator.academy/boat-lift-capacity-calculator/", "source_date": "2026-01-16", "required_capacity_low_exact_lb": "14819.200", "required_capacity_high_exact_lb": "16952.500", "required_capacity_low_rounded_up_lb": 14820, "required_capacity_high_rounded_up_lb": 16953, "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "10–25%+", "formula_transparency": "published custom formula and factors", "method_note": "Custom method counts known omitted engine as an accessory, fuel×6.0–6.3, water×8.34, then 10–25%.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "Neptune Boat Lifts", "publisher_type": "manufacturer", "source_title": "Boat Lift Weight Calculator", "source_url": "https://www.neptuneboatlifts.com/resources/boat-lift-weight-calculator/", "source_date": "current page read 2026-07-24", "required_capacity_low_exact_lb": "15683.700", "required_capacity_high_exact_lb": "15683.700", "required_capacity_low_rounded_up_lb": 15684, "required_capacity_high_rounded_up_lb": 15684, "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not quantified separately", "formula_transparency": "published constants; calculator code not disclosed", "method_note": "Adds omitted engines, fuel×6.5, water×8.5 and known equipment, then a 15% allowance.", "status": "reviewed—numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "Golden Boat Lifts", "publisher_type": "manufacturer", "source_title": "Weight Calculator", "source_url": "https://goldenboatlifts.com/weight-calculator/", "source_date": "current page read 2026-07-24", "required_capacity_low_exact_lb": "", "required_capacity_high_exact_lb": "", "required_capacity_low_rounded_up_lb": "", "required_capacity_high_rounded_up_lb": "", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not disclosed", "formula_transparency": "inputs visible; coefficients and algorithm undisclosed", "method_note": "Collects propulsion, outboard count and horsepower, tanks, top, batteries and extras; excluded from numeric spread.", "status": "reviewed—not numerically reproducible", "verified_date": "2026-07-24" }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "method": "Hi-Tide Boat Lifts", "publisher_type": "manufacturer", "source_title": "Lift Calculator", "source_url": "https://hi-tide.com/lift-calculator/", "source_date": "current page read 2026-07-24", "required_capacity_low_exact_lb": "", "required_capacity_high_exact_lb": "", "required_capacity_low_rounded_up_lb": "", "required_capacity_high_rounded_up_lb": "", "counts_or_flags_omitted_engine": true, "interactive": true, "email_gated_result": false, "numeric_separate_margin": "not disclosed separately", "formula_transparency": "inputs and 15% gear allowance visible; fluid coefficients undisclosed", "method_note": "Dry weight explicitly excludes outboards; engine and tank inputs; 15% onboard-gear allowance; excluded from numeric spread.", "status": "reviewed—not numerically reproducible", "verified_date": "2026-07-24" } ], "full_component_benchmark": [ { "vessel": "RV-1", "vessel_label": "RV-1: 24 ft coastal center console, single outboard", "published_dry_weight_lb": "3200.000", "engines_lb": "629.000", "fuel_lb": "745.560", "livewell_saltwater_lb": "342.162", "freshwater_lb": "0.000", "wastewater_lb": "0.000", "stored_gear_lb": "250.000", "batteries_lb": "140.000", "top_lb": "150.000", "loaded_weight_lb": "5456.722", "capacity_margin_pct": "20", "minimum_capacity_screen_exact_lb": "6548.066", "minimum_capacity_screen_rounded_up_lb": 6549 }, { "vessel": "RV-2", "vessel_label": "RV-2: 32 ft coastal cruiser, twin outboards", "published_dry_weight_lb": "8500.000", "engines_lb": "1258.000", "fuel_lb": "1863.900", "livewell_saltwater_lb": "427.702", "freshwater_lb": "249.870", "wastewater_lb": "166.580", "stored_gear_lb": "400.000", "batteries_lb": "280.000", "top_lb": "400.000", "loaded_weight_lb": "13546.052", "capacity_margin_pct": "20", "minimum_capacity_screen_exact_lb": "16255.262", "minimum_capacity_screen_rounded_up_lb": 16256 } ], "charlotte_county_fleet_2020": [ { "county": "Charlotte", "state": "FL", "data_year": 2020, "registration_class": "A-1", "length_range": "under 12 ft", "pleasure_vessels": 3160, "commercial_vessels": 23, "pct_of_county_pleasure_fleet": 13.75, "source": "FLHSMV Alphabetical Vessel Statistics by County, 2020", "source_url": "https://www.flhsmv.gov/pdf/vessels/vesselstats2020.pdf", "verified_date": "2026-07-24" }, { "county": "Charlotte", "state": "FL", "data_year": 2020, "registration_class": "A-2", "length_range": "12 ft–15 ft 11 in", "pleasure_vessels": 2505, "commercial_vessels": 35, "pct_of_county_pleasure_fleet": 10.9, "source": "FLHSMV Alphabetical Vessel Statistics by County, 2020", "source_url": "https://www.flhsmv.gov/pdf/vessels/vesselstats2020.pdf", "verified_date": "2026-07-24" }, { "county": "Charlotte", "state": "FL", "data_year": 2020, "registration_class": "1", "length_range": "16 ft–25 ft 11 in", "pleasure_vessels": 14097, "commercial_vessels": 364, "pct_of_county_pleasure_fleet": 61.36, "source": "FLHSMV Alphabetical Vessel Statistics by County, 2020", "source_url": "https://www.flhsmv.gov/pdf/vessels/vesselstats2020.pdf", "verified_date": "2026-07-24" }, { "county": "Charlotte", "state": "FL", "data_year": 2020, "registration_class": "2", "length_range": "26 ft–39 ft 11 in", "pleasure_vessels": 2608, "commercial_vessels": 73, "pct_of_county_pleasure_fleet": 11.35, "source": "FLHSMV Alphabetical Vessel Statistics by County, 2020", "source_url": "https://www.flhsmv.gov/pdf/vessels/vesselstats2020.pdf", "verified_date": "2026-07-24" }, { "county": "Charlotte", "state": "FL", "data_year": 2020, "registration_class": "3", "length_range": "40 ft–64 ft 11 in", "pleasure_vessels": 400, "commercial_vessels": 10, "pct_of_county_pleasure_fleet": 1.74, "source": "FLHSMV Alphabetical Vessel Statistics by County, 2020", "source_url": "https://www.flhsmv.gov/pdf/vessels/vesselstats2020.pdf", "verified_date": "2026-07-24" }, { "county": "Charlotte", "state": "FL", "data_year": 2020, "registration_class": "4", "length_range": "65 ft–109 ft 11 in", "pleasure_vessels": 3, "commercial_vessels": 0, "pct_of_county_pleasure_fleet": 0.01, "source": "FLHSMV Alphabetical Vessel Statistics by County, 2020", "source_url": "https://www.flhsmv.gov/pdf/vessels/vesselstats2020.pdf", "verified_date": "2026-07-24" }, { "county": "Charlotte", "state": "FL", "data_year": 2020, "registration_class": "5", "length_range": "110 ft and over", "pleasure_vessels": 1, "commercial_vessels": 0, "pct_of_county_pleasure_fleet": 0.0, "source": "FLHSMV Alphabetical Vessel Statistics by County, 2020", "source_url": "https://www.flhsmv.gov/pdf/vessels/vesselstats2020.pdf", "verified_date": "2026-07-24" }, { "county": "Charlotte", "state": "FL", "data_year": 2020, "registration_class": "Canoe", "length_range": "canoes", "pleasure_vessels": 202, "commercial_vessels": 1, "pct_of_county_pleasure_fleet": 0.88, "source": "FLHSMV Alphabetical Vessel Statistics by County, 2020", "source_url": "https://www.flhsmv.gov/pdf/vessels/vesselstats2020.pdf", "verified_date": "2026-07-24" } ], "integrity_checks": { "charlotte_pleasure_class_sum": 22976, "charlotte_published_pleasure_total": 22976, "charlotte_commercial_class_sum": 506, "charlotte_published_commercial_total": 506, "charlotte_dealer_registrations": 60, "charlotte_published_overall_total": 23542, "rv1_reproducible_method_range_lb": [ 5283, 6824 ], "rv2_reproducible_method_range_lb": [ 13447, 16953 ] } }