DOCKING BY CONTROL has been helping boat owners US-nationwide gain greater control of their vessels no matter the size. We care for your vessel like it were ours and we take measures to protect your investment during the installation process. We understand each installation is a direct reflection on us personally, and our company as a whole, and aim to build a great relationship with each of our customers. All of our bow and stern thruster systems are independent units. We only use top quality equipment in each and every installation. We prefer using All Glass Mat (AGM) batteries, which are made of a very absorbent micro fiberglass material. AGM batteries are installed as close to the system as possible, ensuring no voltage drop and maximum power with every use. Please feel free to contact us (321) 890-4511 for further details or if you have any questions