Seaward F600 Marine Water Heater — 6 Gal, 120V AC, Galvanized Steel (698-F600)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Hot Water On Demand — Built for the Marine Environment
The Seaward F600 (698-F600) is a 6-gallon marine water heater engineered for reliable, safe hot water delivery aboard power and sail vessels. With a galvanized steel exterior, aluminum tank, and dual-wall heat exchanger, it's built to handle the corrosive, high-vibration conditions that would compromise a residential unit.
Key Features
- 6-Gallon Capacity — adequate for a couple or small crew's daily hot water needs
- 120V AC / 1800W — standard shore power compatible; fast heat recovery
- Dual-Wall Heat Exchanger (Front-Mounted) — allows engine coolant loop integration for underway heating efficiency
- Aluminum Tank — lightweight and corrosion-resistant; hold-down brackets welded directly to tank for secure installation
- Galvanized Steel Case — rugged exterior protection suited for bilge or locker mounting
- Ignition Protection — compliant for installation in gasoline-engine vessels
- UL Certified — meets US safety standards for marine electrical appliances
Parts Desk Insights
SKU 698-F600 is sourced through Land 'N' Sea under the Seaward/Whale brand. The front-mounted heat exchanger configuration distinguishes this unit from rear-exchanger models — confirm plumbing access and hose routing before recommending. At 11.8 kg, installation typically requires two people. Verify the customer's vessel has a functioning engine coolant loop if they intend to use the heat exchanger for underway hot water; shore power alone is sufficient for marina use. No image currently on file — flag for photo or manufacturer asset request.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.