Bay Bridge Boat Show
Apr. 11-13
Bay Bridge Marina, Kent Island,
Stevensville, Md. 410-268-8828;

In-Water Boat Show
Apr. 18-20
Whitehouse Cove Marina,
Poquoson, Va. 757-508-2602;

Annapolis Spring Sailboat Show
and Cruisers University

Apr. 25-27
Annapolis, Md. 410-268-8828;

Upper Bay Boat Show
May 3-4
Anchor Marina,
North East, Md. 410-287-8280;

Deltaville Dealer Days & Boat Show
May 3-4
Townwide, Deltaville, Va.

Project Clean Stream
Volunteer at one of over 150 sites throughout Maryland and help the Alliance for the Chesapeake Bay clean up the Bay's streams and tributaries. Call for details and specific locations. 9 a.m.-noon. 410-377-6270; cleanstream.allianceforthebay.org.

Potomac River Cleanup
This annual Bay cleanup program will take place at over 300 sites in the Potomac River watershed. Call for site information. Potomac River, 9 a.m.-noon.
301-292-5665; www.potomaccleanup.org.

Oar-making Workshop
Join Chesapeake Bay Maritime Museum boatbuilders in making your own set of oars-ready to use on the water or for decoration during this weekend-long workshop. Chesapeake Bay Maritime Museum, St. Michaels, Md.
9 a.m.-5 p.m. 410-745-4980; www.cbmm.org.

Blessing of the Fleet
Welcome the boating season with a ceremony blessing the Cheapeake Bay Maritime Museum's fleet of historic vessels and other boats along the Miles River. Chesapeake Bay Maritime Museum, 5 p.m.
410-745-4981; www.cbmm.org.

Privateer Festival
Kick off the War of 1812 Battle of Baltimore bicentennial celebration with swashbuckling fun for the whole family, including pirate re-enactors, dockside ship tours and pirate ship cruises, a craft market, food, lots of live entertainment, a live "sea battle" between schooners on the water and land privateers, and the bicentennial bash on Friday night. Fells Point, Baltimore. Fri. Bicentennial Bash 7-10; Sat. 10 a.m.-7 p.m.; Sun. 10 a.m.-6 p.m. 410-675-8900; www.fellspointmainstreet.org.

Blackwater Cleanup Day
Volunteer a little time to help pick up litter and debris in preparation for the summer. Blackwater National Wildlife Refuge, Cambridge, Md. 9 a.m.-3 p.m. 410-901-6124; www.fws.gov/blackwater.

Rock & Roast Fundraiser
Feast on oysters, groove to local bands and raise money for the Box of Rain Foundation, an at-risk-youth sailing program. Annapolis Maritime Museum, Annapolis. 6-10 p.m. 703-863-1275; www.boxofrain.org.

CPR/First Aid Certification
This Chesapeake Area Professional Captains Association course will focus on CPR and AED use, and result in a two-year certification. Annapolis Elks Lodge #622, Edgewater, Md. 9 a.m.-4 p.m. 410-573-0201; www.capca.net.

Second Saturday
Cambridge, Md., pulls out all the stops each month with fun evening events, gallery receptions, special dinners and sales. Downtown Cambridge, Md. 5-9 p.m. 443-477-0843; www.cambridge mainstreet.com.

Anchoring Seminar
The Annapolis Sail and Power Squadron will host this seminar on anchoring, which will cover essential choosing the right anchor, mechanics of proper anchoring techniques and methods of anchoring. West Marine, Annapolis. 10 a.m.-noon. 410-263-8777; www.aspsmd.org.

Earth Day On the Square
This earth-friendly celebration comes complete with live music, kids' nature crafts and free kayak and canoe rides. Leonardtown Square, Leonardtown, Md. 12:30-4:30 p.m. 301-475-9791; www.leonardtown.somd.com.

Safe Boating Course
The Chesapeake Bay Maritime Museum will host this two-day boating safety course to help new boaters obtain their Maryland certificate of boating safety. Advance registration required. Chesapeake Bay Maritime Museum, St. Michaels, Md. 410-745-4941; www.cbmm.org.

Boatyard Bar & Grill Spring Fishing Tournament
Kick off rockfish season while benefiting local Bay charities at this annual fundraising tournament. In addition to a day of great fishing, there will be a fun after-tournament party with great prizes and entertainment. Boatyard Bar & Grill, Annapolis. Fish weigh-in by 4:30 p.m., party 4-8 p.m., award ceremony begins at
5 p.m. 410-216-6206; www.boatyardbarandgrill.com.

Delmarva Birding Weekend
Birding enthusiasts can participate in boat trips, hikes and paddling treks across the Delmarva peninsula to catch a glimpse of the more than 400 species of migratory and local shorebirds, waterfowl, songbirds and raptors migrating north along the Eastern Shore this time of year. 410-632-3110; delmarvabirding.org.

Tiki Bar Opening Day
This raucous annual party marks the beginning of the boating season at the Tiki Bar in Solomons, Md. Noon. www.tikibarsolomons.com.

Betterton Beach Cleanup
Help clean up Betterton Beach for the upcoming season. Preregistration required. Betterton Beach, Md.
9 a.m.-noon. 410-810-5948; www.kentparksandrec.org.

Marine Radar Seminar
This Chesapeake Area Professional Captains Association seminar will discuss practical uses of marine radar for piloting, navigation and collision avoidance, and benefit professional and recreational boaters alike. Annapolis Elks Lodge #622, Edgewater, Md. 9 a.m.-4 p.m. 410-573-0201; www.capca.net.

Apr. 26-May 3
Virginia's Historic Garden Week
Discover some of Virginia's most beautiful homes, gardens and historic landmarks along the James, Rappahannock and Potomac rivers and on the Eastern Shore. Call for times and locations. 804-644-7776; www.vagardenweek.org.

Ward World Wildfowl Carving Championship
This annual carving competition and exhibition features wildfowl carvings, artwork, demonstrations, classes, lectures, auctions, children's activities and more. . Roland E. Powell Convention Center, Ocean City, Md. Fri. 10 a.m.-5 p.m.; Sat. 9 am.-5 p.m.; Sun. 10 a.m.-4 p.m. 410-742-4988; www.wardmuseum.org.

Low Country Shrimp Boil
The Cape Charles Historical Society hosts this annual shrimp boil with lots of great shrimp and seafood, live music, an auction and more. Email for tickets. Cape Charles Museum, Cape Charles, Va. 5-9 p.m.
757-331-1008; ccmuseum@hughes.net.

Groovin' in the Park
Bring a picnic and your lawn chairs and groove along with Deltaville Maritime Museum's first concert of its summer music series on the waterfront stage. Deltaville Maritime Museum and Holly Point Nature Park, Deltaville, Va. 6-8 p.m. 804-776-7200; www.deltavillemusum.com.

Practical Marine Radar
This one-day course presented by the Chesapeake Area Professional Captains Association is designed to show practical use of marine radar for piloting, chart navigation and collision avoidance. Annapolis Elks Lodge #622, Edgewater, Md. 9 a.m.-4 p.m. 410-573-0201; www.capca.net.

Oxford Day
A parade, crab races, boat rides, a dog show, activities at the Cooperative Oxford Lab, children's activities, raffles, lots of food and live music mark this annual small town celebration. Oxford, Md. 8 a.m.-6 p.m., parade at 11 a.m.; www.oxfordday.org.

Winefest at St. Michaels
Head to St. Michaels, Md., for great food and wine, cooking demonstrations, seminars and entertainment at this annual festival. St. Michaels, Md. 443-205-2185; www.winefestatstmichaels.com.

Taste of the Town
Spend an afternoon sampling culinary treats from Chestertown's top chefs, as well as local beer and wine. Fountain Park, Chestertown, Md. Noon-3 p.m. 443-480-1987; www.tasteofchestertown.com.

Bands on the Bay
This annual fundraiser will feature live music, a live and silent auction, dancing, food and drinks all to benefit the Kennedy Krieger Institute. Herrington on the Bay, Rose Haven, Md. Call for times. 240-375-6106; www.bandsonthebay.org.

Voyage Planning & Electronic Charting Seminar
This Chesapeake Area Professional Captains Association seminar will help boaters learn safe voyage planning techniques, electronic charting navigation, route planning and communications planning. Annapolis Elks Lodge #622, Edgewater, Md. 9 a.m.-4 p.m. 410-573-0201; www.capca.net.