For cruising, live-aboard or weekend boaters alike
When you’re out on the water, every square inch of your vessel counts and so does every decision you make, especially when it comes to onboard sanitation. Enter the Sun-Mar GTG: a compact, efficient and environmentally-conscious compost toilet solution designed with small spaces (yes, including boats) in mind.
Compact Design that Fits Your Vessel
The GTG is for use where a conventional toilet is not an option or not cost-effective. With its ultra-compact footprint and sleek European styling, the GTG is robustly engineered. It was designed for situations where a conventional toilet is impractical. The GTG is the smallest and most economical model in Sun-Mar’s composting toilet line-up, perfect for boats, as well as tiny homes, cabins or any other tight space.
The GTG’s dimensions (19.8″ high, 15.75″ wide, 24″ deep) make it a perfect option for marine heads where space is at a premium.
Water-Free Operation & Simplified Waste Management
Traditional marine heads typically require sea-water flushing, piping, holding tanks, pump-outs and significant plumbing. On board many vessels, this means continuous vigilance.
By contrast, the GTG is a urine diverting composting toilet that separates liquid from solid waste in two chambers and functions without the need for a conventional flush system.
For boaters, this can translate into:
- Lower water usage (or none at all)
- Fewer hoses, fewer pump-outs
- Odor-controlled operation with proper ventilation
Installation & Maintenance Made Easier
The GTG simplifies many of the big pain points for marine sanitation upgrades. The toilet base is designed to be fixed to the floor, allowing straightforward installation in small spaces. The solid and liquid waste chambers are easily accessible and removable. As it doesn’t rely on complex marine plumbing, the GTG can reduce both points of failure and maintenance hassle, which is a big plus for cruisers.
Environmentally Friendly And Aligned with Modern Boating Values
Today’s boaters care deeply about minimizing environmental impact. Whether you’re anchored in a quiet cove or sailing in protected waters, reducing discharge, avoiding chemicals and minimizing pump-outs is a thoughtful move.
Why Sun-Mar’s GTG is a Smart Choice for Your Boat
- Space-efficient: Perfect for tight marine head compartments
- Water-saving / water-free: Ideal for boats with limited plumbing or grey/black-water systems
- Simplified venting and maintenance: Less plumbing, fewer hoses, fewer pump-outs
- Environmentally aligned: Reduces impact, suits modern sustainable boating trends
- Versatile install: The GTG is a perfect solution for boats.
If you’re looking to upgrade your marine head system with something that saves space, reduces plumbing complexity, aligns with your environmental values and offers reliable performance in tight quarters, the Sun-Mar GTG is a standout choice.
Whether you’re weekend cruising, living aboard or seeking a clean, modern alternative to the typical marine pump-out head, the GTG offers a compelling mix of practicality and sustainability.
Ready to get started? The GTG might become your vessel’s most comfortable and efficient toilet.
