Mid-Atlantic Regional Maintenance Center's (MARMC) Dynamic (AFDL 6) dry-dock prepared blocks for replacement in their block build in anticipation of dry-docking Landing Craft Unit (LCU) 1664, at Joint Expeditionary Base Little Creek-Fort Story, Feb. 3.

LCU 1664 is operated by Assault Craft Unit 2, which has built a strong partnership with Dynamic over the past few years in order to maintain, repair and make modifications to crafts that are under their command. Before a vessel like LCU 1664 can be brought in, Dynamic works behind the scenes preparing the dock.

"Our work begins as soon as a craft leaves the dock," said Dynamic Chief Engineer, Chief Hull Technician Michael Modesitt. "The commanding officer and I go around and inspect the structural integrity of the blocks and if we find any crush marks, we have to replace those damaged blocks."

For an LCU, the typical block build is made up of 21 blocks. Ten flat blocks run the bottom length of the port and starboard sides of the vessel, and a keel block sits in the center and supports the bow of the ship.

"Some of the blocks in previous builds we are able to recycle, which saves us time and resources. As long as the block shows no signs of wear or hasn't been crushed, it is salvageable for a new build," said Modesitt.

Oak is used for the base of each block build, given that it is a very hard wood that won't crush when the weight of a craft is placed on top of it. However, the craft needs some room to settle into the block, which is why a softer top block, constructed out of pine, is used to allow for some give once the craft comes to rest.

"The goal of any docking evolution is to land the craft with 100% contact between the craft and the block build; however, if there are gaps shimming is authorized to take up the space in order to prevent structural damage to the hull of the craft," said Modesitt.

It is of utmost importance that any craft being brought into Dynamic be secured properly on the block build, as Dynamic assumes responsibility of the vessel once it has crossed the threshold of the dock.

Dynamic is also currently putting together climate controlled conex boxes, in order to store spare blocks on hand to avoid long lead times when placing orders for lumber. The climate control should reduce the risk of weathering and keep the stored blocks in good condition until they are needed.

"Not only is our crew working hard to get this next build completed, but this is also a great opportunity for us to take advantage of training our junior Sailors," said Dynamic Commanding Officer Lt. Edward Menezes. "Getting their knowledge levels up on proper procedures and the intricacies involved with the builds is important for their safety and the safety of the craft. It is also key to their personal success to obtain skill sets that they can apply throughout their careers."

This has been one of Dynamic's strong suits and a theme that has been passed along by several commanding officers, keep the Sailors trained. Since the crew of Dynamic tends to be between 20 and 30 Sailors at any given time, it is crucial that all personnel are up to speed and properly trained at all times.

"We have had a lot of success because our crew is always prepared and excited to get out on the dock and learn every chance they get," said Modesitt.

Once repairs are completed to LCU 1664, LCU 1661 will be dry-docked for an emergent repair to its coolers and then quickly followed by LCU 1660 which will undergo a general maintenance phase.

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