Six-Pack vs Annual Cleaning Plan: Which Saves More Money?

Short answer: if you get your hull cleaned about 7 times a year or less, the Six-Pack usually wins. If you're on a monthly cleaning schedule (12 times a year), the Annual plan wins, and it comes with a free emergency dive on top. The breakeven point doesn't really depend on your boat's length, since everything is priced per waterline foot. It depends on how often you actually need the diver in the water.

I run every dive myself here in San Diego Bay, so I see the math on both sides of this constantly. Boats in Shelter Island slips with heavy marine growth need monthly visits. A lightly used sailboat out of Chula Vista might only need a cleaning every couple months. The right package follows your growth rate, not the calendar.

Key takeaways

• Six-Pack = pay for 6 cleanings, get a 7th free, works out to about 14% off your plan rate.
• Annual 12-cleaning pack = roughly 15% off the monthly rate, plus a free emergency dive and priority scheduling.
• On a 35-ft boat cleaned monthly, the Annual plan runs about $714/year vs $770/year stacking Six-Packs, a $56 difference, before counting the free emergency dive (worth about $140).
• If you only need 6-7 cleanings a year, the Six-Pack alone beats committing to 12 you won't use.
• All rates are per waterline foot, so the percentage savings scale the same whether you own a 28-footer or a 50-footer. The dollar amount changes, the math doesn't.

How does the Six-Pack actually work?

The Six-Pack is simple. You prepay for 6 cleanings at your plan rate and I give you a 7th one free. That's 7 dives for the price of 6, which comes out to paying about 85.7% of what you'd pay one at a time. No long-term commitment beyond using the 6 you bought, and no annual lock-in.

It fits owners who want a discount without signing up for a full year, or who clean on an irregular schedule, say a boat that only goes out seasonally, or one docked in Mission Bay where growth is a little slower than deep in the bay channels.

How does the Annual 12-cleaning plan work?

The Annual plan is built around a full year of monthly cleanings, 12 visits total, at roughly 15% off the standard monthly per-foot rate. On top of the discount, you get one free emergency dive during the year (line in the prop, dropped phone, whatever comes up) and priority scheduling, which matters more than people expect during busy weekends before Labor Day or Fourth of July when every slip on Harbor Island wants a diver at once.

This plan makes sense for boats that need monthly attention no matter what, twin-engine cruisers with a lot of running gear to keep clean, or hulls sitting in warmer, slower-moving water where growth doesn't wait.

Side by side: the real numbers on a 35-foot boat

Here's how it plays out using our published starting rates. Your actual per-foot rate depends on hull condition, growth rate, and running gear, and I always give a full quote before starting any work, but this shows the shape of the math.

Monthly plan rate: $2/ft, so a 35-ft boat runs $70 per cleaning at that rate.

• No plan, single dives: $4/ft x 35 ft = $140 per visit. Twelve visits a year = $1,680.
• Monthly plan, no package: $70 x 12 = $840/year.
• Six-Pack stacked to cover 12 cleanings: One Six-Pack gets you 7 cleanings for the price of 6 ($420). You still need 5 more cleanings at the monthly rate ($350). Total = $770 for 12 cleanings.
• Annual 12-cleaning plan: $840 x 0.85 = $714, plus a free emergency dive worth about $140 in value.

So for a boat cleaned monthly all year, the Annual plan saves about $56 in cash over stacking Six-Packs, and adds a free emergency dive most owners end up using anyway. If you only need 7 cleanings that year instead of 12, a single Six-Pack at $420 beats committing to the Annual plan's $714, since you're not paying for cleanings you don't need.

Which plan fits your boat and how you use it

Think about your actual cleaning frequency over the last 12 months, not what you think you should be doing.

• Monthly cadence (10-12 cleanings/year): Annual plan wins on price and includes the free emergency dive.
• Bi-monthly or irregular cadence (5-8 cleanings/year): Six-Pack wins, since you're not locked into 12 visits.
• Quarterly or lighter use (3-4 cleanings/year): Neither package makes sense yet. Stick with the quarterly per-foot rate until your usage picks up.
• Want hull and interior done together: Ask about the Hull+Interior combo, which saves 10% when you bundle both, separate from these two packages.

If you're not sure which bucket you fall into, I can look at your hull growth pattern on the first dive and tell you honestly which plan will actually save you money. I'd rather put you on the right plan than the bigger one.

FAQ

Can I switch from a Six-Pack to the Annual plan later? Yes. If you buy a Six-Pack and realize you're calling every 3-4 weeks anyway, we can roll the remaining prepaid dives into an Annual plan and adjust the math so you're not paying twice.

Does the free emergency dive in the Annual plan cover line-in-prop calls? Yes, that's exactly what it's for. Line in the prop, fishing line wrapped on the shaft, a dropped phone or tool, all count as emergency dives and one is included free with the Annual plan.

Do these packages include zinc replacement? Zinc inspection is free on every visit regardless of plan. If zincs need replacing, that's billed cost-plus on the parts with no markup, separate from the cleaning package price.

Does my boat need to come out of the water for either package? No. Every cleaning under either plan is done in-water at your slip. I dive at Shelter Island, Harbor Island, Point Loma, Coronado, Mission Bay, Embarcadero, and Chula Vista without a haul-out.

Are these prices the same everywhere in San Diego Bay? The per-foot rate is the same across our service area, but Shelter Island sits in a copper TMDL zone with stricter rules on hull cleaning discharge, so I follow soft-cloth BMP standards there to protect antifouling paint and stay within permit requirements. That doesn't change your price, just how the cleaning is done.

Ready to lock in your rate?

Send me your boat's length and current cleaning frequency and I'll run the actual numbers for your hull, not just the general math above. Every quote is free and I don't start work until you've approved it. Get a quote or book a hull cleaning here.

SCHEMA NOTES

FAQPage Q&As: 1. Q: Can I switch from a Six-Pack to the Annual plan later? A: Yes. If you buy a Six-Pack and realize you're calling every 3-4 weeks anyway, we can roll the remaining prepaid dives into an Annual plan and adjust the math so you're not paying twice. 2. Q: Does the free emergency dive in the Annual plan cover line-in-prop calls? A: Yes, that's exactly what it's for. Line in the prop, fishing line wrapped on the shaft, a dropped phone or tool, all count as emergency dives and one is included free with the Annual plan. 3. Q: Do these packages include zinc replacement? A: Zinc inspection is free on every visit regardless of plan. If zincs need replacing, that's billed cost-plus on the parts with no markup, separate from the cleaning package price. 4. Q: Does my boat need to come out of the water for either package? A: No. Every cleaning under either plan is done in-water at your slip, across Shelter Island, Harbor Island, Point Loma, Coronado, Mission Bay, Embarcadero, and Chula Vista, without a haul-out. 5. Q: Are these prices the same everywhere in San Diego Bay? A: The per-foot rate is the same across the service area, but Shelter Island sits in a copper TMDL zone with stricter discharge rules, so soft-cloth BMP standards are used there to protect antifouling paint and stay within permit requirements. This doesn't change the price, just the cleaning method.

BlogPosting summary: A side-by-side cost comparison of CaliCoast's Six-Pack and Annual 12-cleaning packages, using real per-foot pricing examples to show which plan saves more based on cleaning frequency.

Suggested images: - Alt: "Gus Alves surfacing after an in-water hull cleaning at a Shelter Island slip in San Diego Bay" - Alt: "Side-by-side comparison chart of Six-Pack versus Annual cleaning plan costs for a 35-foot boat"